Parsing error unexpected character eof

I am upgrading my angular 2 app from beta 9 to RC5 and i get this error in my form template.

Here is the full error

zone.js:461 Unhandled Promise rejection: Template parse errors:
Unexpected character "EOF" (Do you have an unescaped "{" in your template? Use "{{ '{' }}") to escape it.) ("
    </div>
  </div>
</section>
[ERROR ->]"): ParametersFormComponent@186:0
Invalid ICU message. Missing '}'. ("arr">
        <p>{{ pa }}</p>
        <button class="destroy" type="button" (click)="deleteItem(pa, [ERROR ->]'param')"></button>
      </li>

"): ParametersFormComponent@158:70
Unexpected closing tag "button" ("    <p>{{ pa }}</p>
        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')">[ERROR ->]</button>
      </li>

"): ParametersFormComponent@158:80
Unexpected closing tag "li" ("/p>
        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')"></button>
      [ERROR ->]</li>

      <pre>{ Restrict Operator } parameters</pre>
"): ParametersFormComponent@159:6
Invalid ICU message. Missing '}'. ("arr">
        <p>{{ la }}</p>
        <button class="destroy" type="button" (click)="deleteItem(la, [ERROR ->]'liftOperator')"></button>
      </li>

"): ParametersFormComponent@170:70
Unexpected closing tag "button" ("{{ la }}</p>
        <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')">[ERROR ->]</button>
      </li>

"): ParametersFormComponent@170:87
Unexpected closing tag "li" ("     <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')"></button>
      [ERROR ->]</li>

      <pre>{ xInitial } parameters</pre>
"): ParametersFormComponent@171:6
Invalid ICU message. Missing '}'. ("
    </div>
  </div>
</section>
[ERROR ->]"): ParametersFormComponent@186:0 ; Zone: <root> ; Task: Promise.then ; Value: BaseException {message: "Template parse errors:↵Unexpected character "EOF" …tion>↵[ERROR ->]"): ParametersFormComponent@186:0", stack: "Error: Template parse errors:↵Unexpected character…ttp://localhost:4200/polyfills.bundle.js:3385:38)"}message: "Template parse errors:↵Unexpected character "EOF" (Do you have an unescaped "{" in your template? Use "{{ '{' }}") to escape it.) ("↵    </div>↵  </div>↵</section>↵[ERROR ->]"): ParametersFormComponent@186:0↵Invalid ICU message. Missing '}'. ("arr">↵        <p>{{ pa }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(pa, [ERROR ->]'param')"></button>↵      </li>↵↵"): ParametersFormComponent@158:70↵Unexpected closing tag "button" ("    <p>{{ pa }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')">[ERROR ->]</button>↵      </li>↵↵"): ParametersFormComponent@158:80↵Unexpected closing tag "li" ("/p>↵        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')"></button>↵      [ERROR ->]</li>↵↵      <pre>{ Restrict Operator } parameters</pre>↵"): ParametersFormComponent@159:6↵Invalid ICU message. Missing '}'. ("arr">↵        <p>{{ la }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(la, [ERROR ->]'liftOperator')"></button>↵      </li>↵↵"): ParametersFormComponent@170:70↵Unexpected closing tag "button" ("{{ la }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')">[ERROR ->]</button>↵      </li>↵↵"): ParametersFormComponent@170:87↵Unexpected closing tag "li" ("     <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')"></button>↵      [ERROR ->]</li>↵↵      <pre>{ xInitial } parameters</pre>↵"): ParametersFormComponent@171:6↵Invalid ICU message. Missing '}'. ("↵    </div>↵  </div>↵</section>↵[ERROR ->]"): ParametersFormComponent@186:0"stack: "Error: Template parse errors:↵Unexpected character "EOF" (Do you have an unescaped "{" in your template? Use "{{ '{' }}") to escape it.) ("↵    </div>↵  </div>↵</section>↵[ERROR ->]"): ParametersFormComponent@186:0↵Invalid ICU message. Missing '}'. ("arr">↵        <p>{{ pa }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(pa, [ERROR ->]'param')"></button>↵      </li>↵↵"): ParametersFormComponent@158:70↵Unexpected closing tag "button" ("    <p>{{ pa }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')">[ERROR ->]</button>↵      </li>↵↵"): ParametersFormComponent@158:80↵Unexpected closing tag "li" ("/p>↵        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')"></button>↵      [ERROR ->]</li>↵↵      <pre>{ Restrict Operator } parameters</pre>↵"): ParametersFormComponent@159:6↵Invalid ICU message. Missing '}'. ("arr">↵        <p>{{ la }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(la, [ERROR ->]'liftOperator')"></button>↵      </li>↵↵"): ParametersFormComponent@170:70↵Unexpected closing tag "button" ("{{ la }}</p>↵        <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')">[ERROR ->]</button>↵      </li>↵↵"): ParametersFormComponent@170:87↵Unexpected closing tag "li" ("     <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')"></button>↵      [ERROR ->]</li>↵↵      <pre>{ xInitial } parameters</pre>↵"): ParametersFormComponent@171:6↵Invalid ICU message. Missing '}'. ("↵    </div>↵  </div>↵</section>↵[ERROR ->]"): ParametersFormComponent@186:0↵    at new BaseException (http://localhost:4200/main.bundle.js:3322:23)↵    at TemplateParser.parse (http://localhost:4200/main.bundle.js:14533:19)↵    at RuntimeCompiler._compileTemplate (http://localhost:4200/main.bundle.js:32136:51)↵    at http://localhost:4200/main.bundle.js:32064:83↵    at Set.forEach (native)↵    at compile (http://localhost:4200/main.bundle.js:32064:47)↵    at ZoneDelegate.invoke (http://localhost:4200/polyfills.bundle.js:3352:29)↵    at Zone.run (http://localhost:4200/polyfills.bundle.js:3245:44)↵    at http://localhost:4200/polyfills.bundle.js:3600:58↵    at ZoneDelegate.invokeTask (http://localhost:4200/polyfills.bundle.js:3385:38)"__proto__: ErrorconsoleError @ zone.js:461_loop_1 @ zone.js:490drainMicroTaskQueue @ zone.js:494

and the html file

<section class="container-fluid">
  <div class="col-sm-8">
    <h1>Parameters Form</h1>
    <form [ngFormModel]="myForm" (ngSubmit)="onSubmit(myForm.value)" class="parameters-form">
      <fieldset>
        <div class="form-inline">
          <div class="form-group">
            <label for="numberOfModelParameters">Number of Model Parameters(n)</label>
            <input type="number" #n
                   id="numberOfModelParameters"
                   class="form-control"
                   placeholder="numberOfModelParameters Param"
                   [ngFormControl]="myForm.controls['numberOfModelParameters']">
          </div>
          <div class="form-group">
            <label for="numberOfModelVariables">Number of Model Variables(m)</label>
            <input type="number" #m
                   id="numberOfModelVariables"
                   class="form-control"
                   placeholder="numberOfModelVariables Param"
                   [ngFormControl]="myForm.controls['numberOfModelVariables']">
          </div>
        </div>

        <div class="form-inline">
          <div class="form-group">
            <label for="systemParameters">System Parameters</label>
            <input type="text"
                   id="systemParameters"
                   class="form-control"
                   placeholder="systemParameters Param"
                   [ngFormControl]="systemParameters"
                   (keypress)="addToArray($event, systemParameters.value, 'systemParameters')">
          </div>
          <div class="form-group">
            <label for="restrictOperator">Restrict Operator</label>
            <input type="text"
                   id="restrictOperator"
                   class="form-control"
                   placeholder="restrictOperator Param"
                   [ngFormControl]="myForm.controls['restrictOperator']"
                   (keypress)="addToArray($event, restrictOperator.value, 'restrictOperator')">
          </div>
        </div>

        <div class="form-inline">
          <div class="form-group">
            <label for="param">Param</label>
            <input type="number"
                   id="param"
                   class="form-control"
                   placeholder="param"
                   [ngFormControl]="myForm.controls['param']"
                   (keypress)="addToArray($event, param.value, 'param')">
          </div>
          <div class="form-group">
            <label for="liftOperator">Lift Operator</label>
            <input type="text"
                   id="liftOperator"
                   class="form-control"
                   placeholder="liftOperator Param"
                   [ngFormControl]="myForm.controls['liftOperator']"
                   (keypress)="addToArray($event, liftOperator.value, 'liftOperator')">
          </div>
        </div>

        <div class="form-inline">
          <div class="form-group">
            <label for="netLogoFile">Net Logo File</label>
            <input type="text"
                   id="netLogoFile"
                   class="form-control"
                   placeholder="netLogoFile Param"
                   [ngFormControl]="myForm.controls['netLogoFile']">
          </div>

          <div class="form-group">
            <label for="xInitial">xInitial</label>
            <input type="number"
                   id="xInitial"
                   class="form-control"
                   placeholder="xInitial Param"
                   [ngFormControl]="myForm.controls['xInitial']"
                   (keypress)="addToArray($event, xInitial.value, 'xInitial')">
          </div>
        </div>
      </fieldset>


      <fieldset>
        <div class="form-inline">
          <div class="form-group">
            <label for="realisations">Realisations</label>
            <input type="number"
                   id="realisations"
                   class="form-control"
                   placeholder="Realisations Param"
                   [ngFormControl]="myForm.controls['realisations']">
          </div>

        </div>


        <div class="form-group">
          <label for="NumConstSteps">Number of Constant Steps</label>
          <input type="number"
                 id="NumConstSteps"
                 class="form-control"
                 placeholder="NumConstSteps Param"
                 [ngFormControl]="myForm.controls['numConstSteps']">
        </div>

        <div class="form-group">
          <label for="timeHorizon">Time Horizon</label>
          <input type="number"
                 id="timeHorizon"
                 class="form-control"
                 placeholder="timeHorizon Param"
                 [ngFormControl]="myForm.controls['timeHorizon']">
        </div>

        <div class="form-group">
          <label for="continuationStep">Continuation Step</label>
          <input type="number"
                 id="continuationStep"
                 class="form-control"
                 placeholder="continuationStep Param"
                 [ngFormControl]="myForm.controls['continuationStep']">
        </div>

        <div class="form-group">
          <label for="continuationStepSign">Continuation Step Sign (+,-)</label>
          <input type="text"
                 id="continuationStepSign"
                 class="form-control"
                 placeholder="continuationStep sign"
                 [ngFormControl]="myForm.controls['continuationStepSign']">
        </div>

      </fieldset>

      <button [disabled]="!isFullfilled(m.value, n.value) || !myForm.valid" type="submit" class="btn btn-success">Submit</button>
      <!-- <button type="submit" class="btn btn-success">Submit</button> -->

    </form>
  </div>

  <div class="col-sm-4">
    <div class="parameter-values-display" *ngIf="system_arr.length != 0 || param_arr.length != 0 || restrict_arr.length != 0 || lift_arr.length != 0 || xinitial_arr.length != 0">
      <pre>{ System } parameters</pre>
      <li class="parameters" *ngFor="#sa of system_arr">
        <p>{{ sa }}</p>
        <button class="destroy" type="button" (click)="deleteItem(sa, 'systemParameters')"></button>
      </li>

      <pre>{ Param } Parameters</pre>
      <li class="parameters" *ngFor="#pa of param_arr">
        <p>{{ pa }}</p>
        <button class="destroy" type="button" (click)="deleteItem(pa, 'param')"></button>
      </li>

      <pre>{ Restrict Operator } parameters</pre>
      <li class="parameters" *ngFor="#ra of restrict_arr">
        <p>{{ ra }}</p>
        <button class="destroy" type="button" (click)="deleteItem(ra, 'restrictOperator')"></button>
      </li>

      <pre>{ Lift Operator } parameters</pre>
      <li class="parameters" *ngFor="#la of lift_arr">
        <p>{{ la }}</p>
        <button class="destroy" type="button" (click)="deleteItem(la, 'liftOperator')"></button>
      </li>

      <pre>{ xInitial } parameters</pre>
      <li class="parameters" *ngFor="#xa of xinitial_arr">
        <p>{{ xa }}</p>
        <button class="destroy" type="button" (click)="deleteItem(xa, 'xInitial')"></button>
      </li>

      <div class="response-wrapper">
        <label>Response</label>
        <pre><span>{{ response | json }}</span></pre>
      </div>
    </div>
  </div>
</section>

this was working fine in beta i haven’t changed anything since. Any insight?

SyntaxError: unexpected EOF while parsing

What is unexpected EOF while parsing error?

The SyntaxError: unexpected EOF while parsing error also is known as parsing error where the control in the program/code reaches to the end, but there are more code/program lines that are needed to be compiled. It can be due to some incomplete syntax, i.e., something missing in the code which terminated further execution of the program.

While debugging the program line by line in the console, you will notice that the error occurred because of any single wrong statement not due to block of code.

Cause of SyntaxError: Unexpected EOF while parsing

This error can occur due to the following reasons.

• Incomplete parameters may cause this kind of errors.
• Incomplete functions along with the combination of keys statements like ‘try and except,’if and else, and incomplete loop statements.

Therefore we need to take care of these points to avoid this ‘SyntaxError: Unexpected EOF while parsing’ error.

See the following example:-

Example with Error:

In the above code example, we have created a dictionary and did not close the ‘>’bracket, So when the compiler was compiling the code, it couldn’t find the ‘>’ bracket and trow the error code “unexpected EOF while parsing” as output.

Example with Solution:

Program –1 Error

The Python program below is a combination of the ‘Try and Except’ block. In this program, we can see the ‘Try’ block is present, but the ‘Except’ block is missing, and therefore, the control terminates itself due to incomplete syntax. And you get SyntaxError: unexpected EOF while parsing error

Program –2 Solved Program

Now in this program, the keyword combination with key statements ‘Try and Except’ is complete, so the program execution is completed.

How to resolve this Error?

To avoid this error, please do the following

• You need to take care of the parameters and their syntaxes. Need to check all function and their closing statements.
• Before executing the program, please check if all the parameter of functions is defined.
• Also, check and correct the indentation of the program

Conclusion

It is an error that occurred at the time of parsing, which implies that it is a syntax error caused due to missing closing statements or incomplete argument of the function.

Therefore you need to take care of the indentation of the program, which helps you to solve this error.

Источник

Common Angular Errors And How To Fix Them

Angular is such an awesome framework, but sometimes the errors leave you guessing. Have you ever wished that you had a cheat-sheet for fixing errors in Angular? Well, now you do. This article covers the most common Angular errors, their most common causes, and how to fix them.

This article will be divided into sections for each error. Search the text of your error, or settle in for some light error reading. 😉

Error: ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked

Here is the most infamous of Angular errors. There are a variety of causes and fixes, but here’s the silver bullet fix: Use the OnPush change detection strategy. In a root component, AppComponent if you’d like, specify your change detection strategy:

Every child component will inherit this change detection strategy. It will completely eliminate the error but there’s a caveat: every binding must be immutable. That means you can’t mutate the same property, you have to set it to something entirely new in order to trigger change detection.

If you don’t want to implement On-push, here are common causes of the error and how to fix it:

• A property you are binding to was undefined or null and then had a value set at runtime. Solution: set default value.
• Sometimes this error occurs because you are using the async pipe with synchronous code, such as calling next() on a BehaviorSubject . Here are several ways to make your code asynchronous: Use a setTimeout , or pipe delay(0) on your observable:

Error: Template parse errors:
Can’t bind to ‘formControl’ since it isn’t a known property of ‘input’.

• You need to add ReactiveFormsModule to the imports of the module your component belongs to.

Error: Template parse errors:
Unexpected character “EOF” (Do you have an unescaped “<“ in your template?

• Your template is likely missing a double-quote (“) or perhaps has an extra double-quote.
• Your template has invalid interpolation — Where you should have << >> you might be missing a curly bracket.

Error: No value accessor for form control with name: ‘foo’

• You added a formControl or formControlName binding to an element that isn’t an input, select or textarea. Reactive form controls can only be bound to valid form controls.

Error: Template parse errors: Can’t bind to ‘foo’ since it isn’t a known property of ‘element’

• If it’s a directive selector, omit brackets unless it’s holding a value
• If you’re seeing this error on a component, skip down to the next error

Otherwise, you might be trying to bind to a native HTML element attribute. Maybe you tried something like this:

The proper way to do this is to prefix native attributes with “attr” like so:

Error: Template parse errors: Can’t bind to ‘foo’ since it isn’t a known property of ‘foo-component’…

This could be because you simply forgot to add the @Input to FooComponent :

Or it could be caused by the same issue that would cause this error:

Error: Template parse errors: ‘foo-component’ is not a known element

If FooComponent isn’t declared in any module yet, declare it in the module you are using it in:

If FooComponent comes from another module, say ModuleB , and you are trying to use it in a component that belongs to ModuleA , simply import ModuleB in ModuleA :

And make sure ModuleB both declares and exports FooComponent :

If you are trying to use FooComponent in a lazy-loaded module you might have already imported its module, ModuleB in AppModule . That’s ok, you can import ModuleB again in the lazy-loaded module.

But if any modules included in ModuleB can only be in included once, you might see this error:

ModuleB is already loaded. Import it in the AppModule only.

In this case, find the module imported in ModuleB which exports FooComponent . Let’s call it ModuleC . Then just import ModuleC in your lazy-loaded module.

NullInjectorError: No provider for FooService!

This error can also happen for pipes. For both services and pipes, this error can be easily fixed by amending the decorator of your service, or including this additional decorator on your pipe:

This will include the service or pipe in your root bundle. If the service isn’t required on the initial page load, you can avoid bloating your bundle by omitting the providedIn value, and instead just providing the service or pipe in the modules that need it by including it in the providers array:

RouterModule.forRoot() called twice. Lazy loaded modules should use RouterModule.forChild() instead.

If this isn’t caused by actually calling RouterModule.forRoot() twice (once in the AppModule , and once in another module), then this is almost always caused by importing the AppModule . You never import the AppModule . It’s the root module that bootstraps your application.

Everything included in AppModule is already available to other modules. However, in a lazy-loaded module, you will need to re-import things that are already imported in AppModule . This is totally fine.

Error: Template parse errors: No provider for ControlContainer (“[ERROR ->]

If you’re using a form tag in a template, and you are not using a FormGroup , it will cause this error. Import the FormsModule to make it go away, or alternatively, use a FormGroup binding on your form tag, and import the ReactiveFormsModule .

Error: ngIfElse must be a TemplateRef, but received ‘[object HTMLDivElement]’.

You may have tried this:

But you need to use ng-template like so:

Error: Uncaught (in promise): EmptyError: no elements in sequence

This is an RxJs error. It can occur if you used first() in an Observable that had a takeUntil() emit before first() .

I hope this has helped you discover the cause of your error and how to fix it. If so, please give some claps! If I left anything out, feel free to respond in the comments, and I’ll add it on.

Источник

SyntaxError Unexpected EOF While Parsing Python Error [Solved]

Error messages help us solve/fix problems in our code. But some error messages, when you first see them, may confuse you because they seem unclear.

One of these errors is the «SyntaxError: unexpected EOF while parsing» error you might get in Python.

In this article, we’ll see why this error occurs and how to fix it with some examples.

How to Fix the “SyntaxError: Unexpected EOF While Parsing” Error

Before we look at some examples, we should first understand why we might encounter this error.

The first thing to understand is what the error message means. EOF stands for End of File in Python. Unexpected EOF implies that the interpreter has reached the end of our program before executing all the code.

This error is likely to occur when:

• we fail to declare a statement for loop ( while / for )
• we omit the closing parenthesis or curly bracket in a block of code.

Have a look at this example:

In the code above, we created a dictionary but forgot to add > (the closing bracket) – so this is certainly going to throw the «SyntaxError: unexpected EOF while parsing» error our way.

After adding the closing curly bracket, the code should look like this:

This should get rid of the error.

Let’s look at another example.

In the while loop above, we have declared our variable and a condition but omitted the statement that should run until the condition is met. This will cause an error.

Here is the fix:

Now our code will run as expected and print the values of i from 1 to the last value of i that is less than 11.

This is basically all it takes to fix this error. Not so tough, right?

To be on the safe side, always enclose every parenthesis and braces the moment they are created before writing the logic nested in them (most code editors/IDEs will automatically enclose them for us).

Likewise, always declare statements for your loops before running the code.

Conclusion

In this article, we got to understand why the «SyntaxError: unexpected EOF while parsing» occurs when we run our code. We also saw some examples that showed how to fix this error.

Источник

SyntaxError: unexpected EOF while parsing

Table of Contents Hide

The SyntaxError: unexpected EOF while parsing occurs if the Python interpreter reaches the end of your source code before executing all the code blocks. This happens if you forget to close the parenthesis or if you have forgotten to add the code in the blocks statements such as for , if , while , etc. To solve this error check if all the parenthesis are closed properly and you have at least one line of code written after the statements such as for , if , while , and functions.

What is an unexpected EOF while parsing error in Python?

EOF stands for End of File and SyntaxError: unexpected EOF while parsing error occurs where the control in the code reaches the end before all the code is executed.

Generally, if you forget to complete a code block in python code, you will get an error “SyntaxError: unexpected EOF while parsing.”

Most programming languages like C, C++, and Java use curly braces to define a block of code. Python, on the other hand, is a “block-structured language” that uses indentation.

What is unexpected EOF while parsing error?

The SyntaxError: unexpected EOF while parsing error also is known as parsing error where the control in the program/code reaches to the end, but there are more code/program lines that are needed to be compiled. It can be due to some incomplete syntax, i.e., something missing in the code which terminated further execution of the program.

While debugging the program line by line in the console, you will notice that the error occurred because of any single wrong statement not due to block of code. 

Therefore we need to take care of these points to avoid this ‘SyntaxError: Unexpected EOF while parsing’ error.

See the following example:-

Example with Error:

dictionary={

'name':'ram',

print(dictionary['name'].upper()

Output:

SyntaxError: unexpected EOF while parsing

In the above code example, we have created a dictionary and did not close the ‘}’bracket, So when the compiler was compiling the code, it couldn’t find the ‘}’ bracket and trow the error code “unexpected EOF while parsing” as output.

Example with Solution:

dictionary={

'name':'ram',

}

print(dictionary['name'].upper())

Output:

Output: RAM

Program –1 Error 

The Python program below is a combination of the ‘Try and Except’ block. In this program, we can see the ‘Try’ block is present, but the ‘Except’ block is missing, and therefore, the control terminates itself due to incomplete syntax. And you get SyntaxError: unexpected EOF while parsing error

def chalu ():
    print ("is where the control ")  
    cont_abc ()
def Cont_abc (): 
    cont_0=raw_input("Command enter ") 
    try: 
        if cont_0 == 'right ':                            
           next_screen () 
        else:  
            print ('right.')  
            cont_abc ()  

Output:

File "Main.py", line 14

SyntaxError: unexpected EOF while parsing

Program –2 Solved Program

Now in this program, the keyword combination with key statements ‘Try and Except’ is complete, so the program execution is completed.

def chalu ():
    print ("is where the control ")  
    cont_abc ()
def Cont_abc (): 
    cont_0=raw_input("Command enter ") 
    try: 
        if cont_0 == 'right ':                            
           next_screen () 
        else:  
            print ('right.')   
            cont_abc ()
    except Exception as ex:
            print(ex)

Output

...Program finished with exit code 0

How to resolve this Error?

To avoid this error, please do the following

• You need to take care of the parameters and their syntaxes. Need to check all function and their closing statements.
• Before executing the program, please check if all the parameter of functions is defined.
• Also, check and correct the indentation of the program

Conclusion

It is an error that occurred at the time of parsing, which implies that it is a syntax error caused due to missing closing statements or incomplete argument of the function.

Therefore you need to take care of the indentation of the program, which helps you to solve this error.

The SyntaxError: unexpected EOF while parsing occurs if the Python interpreter reaches the end of your source code before executing all the code blocks. This happens if you forget to close the parenthesis or if you have forgotten to add the code in the blocks statements such as for, if, while, etc. To solve this error check if all the parenthesis are closed properly and you have at least one line of code written after the statements such as for, if, while, and functions.

What is an unexpected EOF while parsing error in Python?

EOF stands for End of File and SyntaxError: unexpected EOF while parsing error occurs where the control in the code reaches the end before all the code is executed. 

Generally, if you forget to complete a code block in python code, you will get an error “SyntaxError: unexpected EOF while parsing.”

Most programming languages like C, C++, and Java use curly braces { } to define a block of code. Python, on the other hand, is a “block-structured language” that uses indentation.

A Python program is constructed from code blocks. A block is a piece of Python program text that is executed as a unit. The following are blocks: a module, a function body, and a class definition. Each command typed interactively is a block.

There are several reasons why we get this error while writing the python code. Let us look into each of the scenarios and solve the issue.

Sometimes if the code is not indented properly you will get unindent does not match any outer indentation error.

Scenario 1 – Missing parenthesis or Unclosed parenthesis

One of the most common scenarios is an unclosed parenthesis (), brackets [], and curly braces {} in the Python code.

• Parenthesis is mainly used in print statements, declaring tuples, calling the built-in or user-defined methods, etc.
• Square brackets are used in declaring the Arrays, Lists, etc in Python
• Curly braces are mainly used in creating the dictionary and JSON objects.

In the below example, we have taken simple use cases to demonstrate the issue. In larger applications, the code will be more complex and we should use IDEs such as VS Code, and PyCharm which detect and highlights these common issues to developers.

# Paranthesis is not closed properly in the Print Statement
print("Hello"

# Square bracket is not closed while declaring the list
items =[1,2,3,4,5


# Curly Braces is not closed while creating the dictionary
dictionary={ 'FirstName':'Jack'

Output

SyntaxError: unexpected EOF while parsing

If you look at the above code, we have a print statement where the parenthesis has not closed, a list where the square bracket is not closed, and a dictionary where the curly braces are not closed. Python interpreter will raise unexpected EOF while parsing.

Solution :

We can fix the issue by enclosing the braces, parenthesis, and square brackets properly in the code as shown below.

# Paranthesis is now closed properly in the Print Statement
print("Hello")

# Square bracket is now closed while declaring the list
items =[1,2,3,4,5]
print(items)

# Curly Braces is now closed while creating the dictionary
dictionary={ 'FirstName':'Jack'}
print(dictionary)

Output

Hello
[1, 2, 3, 4, 5]
{'FirstName': 'Jack'}

If we try to execute the program notice the error is gone and we will get the output as expected.

Scenario 2: Incomplete functions along with statements, loops, try and except 

The other scenario is if you have forgotten to add the code after the Python statements, loops, and methods.

• if Statement / if else Statement
• try-except statement
• for loop
• while loop
• user-defined function

Python expects at least one line of code to be present right after these statements and loops. If you have forgotten or missed to add code inside these code blocks Python will raise SyntaxError: unexpected EOF while parsing

Let us look at some of these examples to demonstrate the issue. For demonstration, all the code blocks are added as a single code snippet.

# Code is missing after the for loop
fruits = ["apple","orange","grapes","pineapple"]
for i in fruits :

# Code is missing after the if statement
a=5
if (a>10):


# Code is missing after the else statement
a=15
if (a>10):
    print("Number is greater than 10")
else:


# Code is missing after the while loop
num=15
while(num<20):

# Code is missing after the method declaration
def add(a,b):

Output

SyntaxError: unexpected EOF while parsing

Solution :

We can fix the issue by addressing all the issues in each code block as mentioned below.

• for loop: We have added the print statement after the for loop.
• if else statement: After the conditional check we have added the print statement which fixes the issue.
• while loop: We have added a print statement and also incremented the counter until the loop satisfies the condition.
• method: The method definition cannot be empty we have added the print statement to fix the issue.

# For loop fixed
fruits = ["apple", "orange", "grapes", "pineapple"]
for i in fruits:
    print(i)

# if statement fixed
a = 5
if a > 10:
    print("number is greated than 10")
else:
    print("number is lesser than 10")

# if else statement fixed
a = 15
if a > 10:
    print("Number is greater than 10")
else:
    print("number is lesser than 10")


# while loop fixed
num = 15
while num < 20:
    print("Current Number is", num)
    num = num + 1


# Method fix
def add(a, b):
    print("Hello Python")


add(4, 5)

Output

apple
orange
grapes
pineapple
number is lesser than 10
Number is greater than 10
Current Number is 15
Current Number is 16
Current Number is 17
Current Number is 18
Current Number is 19
Hello Python

Conclusion

The SyntaxError: unexpected EOF while parsing occurs if the Python interpreter reaches the end of your source code before executing all the code blocks. To resolve the SyntaxError: unexpected EOF while parsing in Python, make sure that you follow the below steps.

1. Check for Proper Indentation in the code.
2. Make sure all the parenthesis, brackets, and curly braces are opened and closed correctly.
3. At least one statement of code exists in loops, statements, and functions.
4. Verify the syntax, parameters, and the closing statements

Have you seen the syntax error “unexpected EOF while parsing” when you run a Python program? Are you looking for a fix? You are in the right place.

The error “unexpected EOF while parsing” occurs when the interpreter reaches the end of a Python file before every code block is complete. This can happen, for example, if any of the following is not present: the body of a loop (for / while), the code inside an if else statement, the body of a function.

We will go through few examples that show when the “unexpected EOF while parsing” error occurs and what code you have to add to fix it.

Let’s get started!

How Do You Fix the EOF While Parsing Error in Python?

If the unexpected EOF error occurs when running a Python program, this is usually a sign that some code is missing.

This is a syntax error that shows that a specific Python statement doesn’t follow the syntax expected by the Python interpreter.

For example, when you use a for loop you have to specify one or more lines of code inside the loop.

The same applies to an if statement or to a Python function.

To fix the EOF while parsing error in Python you have to identify the construct that is not following the correct syntax and add any missing lines to make the syntax correct.

The exception raised by the Python interpreter will give you an idea about the line of code where the error has been encountered.

Once you know the line of code you can identify the potential code missing and add it in the right place (remember that in Python indentation is also important).

SyntaxError: Unexpected EOF While Parsing with a For Loop

Let’s see the syntax error that occurs when you write a for loop to go through the elements of a list but you don’t complete the body of the loop.

In a Python file called eof_for.py define the following list:

animals = ['lion', 'tiger', 'elephant']

Then write the line below:

for animal in animals:

This is what happens when you execute this code…

$ python eof_for.py
  File "eof_for.py", line 4
    
                          ^
SyntaxError: unexpected EOF while parsing

ASyntaxError is raised by the Python interpreter.

The exception “SyntaxError: unexpected EOF while parsing” is raised by the Python interpreter when using a for loop if the body of the for loop is missing.

The end of file is unexpected because the interpreter expects to find the body of the for loop before encountering the end of the Python code.

To get rid of theunexpected EOF while parsing error you have to add a body to the for loop. For example a single line that prints the elements of the list:

for animal in animals:
    print(animal)

Update the Python program, execute it and confirm that the error doesn’t appear anymore.

Unexpected EOF While Parsing When Using an If Statement

Let’s start with the following Python list:

animals = ['lion', 'tiger', 'elephant']

Then write the first line of a if statement that verifies if the size of the animals list is great than 2:

if len(animals) > 2:

At this point we don’t add any other line to our code and we try to run this code.

$ python eof_if.py 
  File "eof_if.py", line 4
    
                        ^
SyntaxError: unexpected EOF while parsing

We get back the error “unexpected EOF while parsing”.

The Python interpreter raises the unexpected EOF while parsing exception when using an if statement if the code inside the if condition is not present.

Now let’s do the following:

• Add a print statement inside the if condition.
• Specify an else condition immediately after that.
• Don’t write any code inside the else condition.

animals = ['lion', 'tiger', 'elephant']

if len(animals) > 2:
    print("The animals list has more than two elements")
else:

When you run this code you get the following output.

$ python eof_if.py 
  File "eof_if.py", line 6
    
         ^
SyntaxError: unexpected EOF while parsing

This time the error is at line 6 that is the line immediately after the else statement.

The Python interpreter doesn’t like the fact that the Python file ends before the else block is complete.

That’s why to fix this error we add another print statement inside the else statement.

if len(animals) > 2:
    print("The animals list has more than two elements")
else:
    print("The animals list has less than two elements")

$ python eof_if.py 
The animals list has more than two elements

The error doesn’t appear anymore and the execution of the Python program is correct.

Note: we are adding the print statements just as examples. You could add any lines you want inside the if and else statements to complete the expected structure for the if else statement.

Unexpected EOF While Parsing With Python Function

The error “unexpected EOF while parsing” occurs with Python functions when the body of the function is not provided.

To replicate this error write only the first line of a Python function called calculate_sum(). The function takes two parameters, x and y.

def calculate_sum(x,y):

At this point this is the only line of code in our program. Execute the program…

$ python eof_function.py
  File "eof_function.py", line 4
    
    ^
SyntaxError: unexpected EOF while parsing

The EOF error again!

Let’s say we haven’t decided yet what the implementation of the function will be. Then we can simply specify the Python pass statement.

def calculate_sum(x,y):
    pass

Execute the program, confirm that there is no output and that the Python interpreter doesn’t raise the exception anymore.

The exception “unexpected EOF while parsing” can occur with several types of Python loops: for loops but also while loops.

On the first line of your program define an integer called index with value 10.

Then write a while condition that gets executed as long as index is bigger than zero.

index = 10

while (index > 0):

There is something missing in our code…

…we haven’t specified any logic inside the while loop.

When you execute the code the Python interpreter raises an EOF SyntaxError because the while loop is missing its body.

$ python eof_while.py 
  File "eof_while.py", line 4
    
                      ^
SyntaxError: unexpected EOF while parsing

Add two lines to the while loop. The two lines print the value of the index and then decrease the index by 1.

index = 10

while (index > 0):
    print("The value of index is " + str(index))
    index = index - 1

The output is correct and the EOF error has disappeared.

$ python eof_while.py
The value of index is 10
The value of index is 9
The value of index is 8
The value of index is 7
The value of index is 6
The value of index is 5
The value of index is 4
The value of index is 3
The value of index is 2
The value of index is 1

Unexpected EOF While Parsing Due to Missing Brackets

The error “unexpected EOF while parsing” can also occur when you miss brackets in a given line of code.

For example, let’s write a print statement:

print("Codefather"

As you can see I have forgotten the closing bracket at the end of the line.

Let’s see how the Python interpreter handles that…

$ python eof_brackets.py
  File "eof_brackets.py", line 2
    
                      ^
SyntaxError: unexpected EOF while parsing

It raises the SyntaxError that we have already seen multiple times in this tutorial.

Add the closing bracket at the end of the print statement and confirm that the code works as expected.

Unexpected EOF When Calling a Function With Incorrect Syntax

Now we will see what happens when we define a function correctly but we miss a bracket in the function call.

def print_message(message):
    print(message)


print_message(

The definition of the function is correct but the function call was supposed to be like below:

print_message()

Instead we have missed the closing bracket of the function call and here is the result.

$ python eof_brackets.py
  File "eof_brackets.py", line 6
    
                  ^
SyntaxError: unexpected EOF while parsing

Add the closing bracket to the function call and confirm that the EOF error disappears.

Unexpected EOF While Parsing With Try Except

A scenario in which the unexpected EOF while parsing error can occur is when you use a try statement and you forget to add the except or finally statement.

Let’s call a function inside a try block without adding an except block and see what happens…

def print_message(message):
    print(message)


try:
    print_message()

When you execute this code the Python interpreter finds the end of the file before the end of the exception handling block (considering that except is missing).

$ python eof_try_except.py 
  File "eof_try_except.py", line 7
    
                    ^
SyntaxError: unexpected EOF while parsing

The Python interpreter finds the error on line 7 that is the line immediately after the last one.

That’s because it expects to find a statement that completes the try block and instead it finds the end of the file.

To fix this error you can add an except or finally block.

try:
    print_message()
except:
    print("An exception occurred while running the function print_message()")

When you run this code you get the exception message because we haven’t passed an argument to the function. Theprint_message() function requires one argument to be passed.

Modify the function call as shown below and confirm that the code runs correctly:

print_message("Hello")

Conclusion

After going through this tutorial you have all you need to understand why the “unexpected EOF while parsing” error occurs in Python.

You have also learned how to find at which line the error occurs and what you have to do to fix it.