SyntaxError: unexpected EOF while parsing

Most programming languages like C, C++, 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.

What is unexpected EOF while parsing error?

The 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.” There are multiple reasons behind why this error is raised. Let us look into a few examples.

Scenario 1 – Incomplete parameters may cause this kind of errors.

dictionary={ 'FirstName':'Jack', print(dictionary['FirstName'].upper()
Output:
SyntaxError: unexpected EOF while parsing

If you look at the above code, we have created a dictionary, and the curly braces are not closed. Python compiler will throw an unexpected eof while parsing error during compilation.

Solution :

dictionary={ 'FirstName':'Jack',}
print(dictionary['FirstName'].upper()
Output:
JACK

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

In case of for loop, while loop, if statement, for statement and function make sure that atleast one line of code is present in the statement. If not, you can expect unexpected eof while parsing.

fruits = ["apple","orange","grapes","pineapple"]
for i in fruits :

If you look at the above example, we have not added any code inside the for statement. This raises an error, and the same will happen even in the case of the while loop and if statement

Solution :

fruits = ["apple","orange","grapes","pineapple"]
for i in fruits :
    print(i);
Output:
apple
orange
grapes
pineapple

Conclusion

To avoid 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 is opened and closed correctly.
  3. At least one statement of code exists in loops, statements, functions.
  4. Verify the syntax, parameters, and the closing statements

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