Python Fundamentals

indentationerror unindent does not match any outer indentation level

The “IndentationError: unindent does not match any outer indentation level” error occurs in Python when the indentation of the code is incorrect or inconsistent.

Python relies on indentation to define code blocks.

Code blocks like if statements, loops, and functions.

If the indentation is not consistent or incorrect, it can cause an “unindent does not match any outer indentation level” error.

For example, let’s say you have a code block that starts with an if statement.

And you have not indented the statements correctly within the if block.

Your interpreter will raise this error.

Here’s an example of an incorrect indentation that can cause an “unindent does not match any outer indentation level” error:

if x == 1:
    print("x is 1")
        print("x is not 2")

In the code above, the second print statement is indented with an additional space compared to the first one.

This can cause an indentation error when the interpreter tries to parse the code.

To fix the error, you need to make sure that the indentation is consistent throughout the code block.

In the example above, you should remove the extra space before the second print statement:

if x == 1:
    print("x is 1")
    print("x is not 2")

By ensuring that the indentation is consistent and correct, you can avoid the “IndentationError: unindent does not match any outer indentation level” error.

If this solved your issue, good.

Otherwise, there is another reason why this error is occurring.

The main reason why this error occurs

The main reason you are getting this error is you are interchanging spaces and tabs.

Yes, that is right.

You must be using tabs and spaces to indent your code.

Try using either tabs only or spaces only.

How do I fix indentation level in Python?

To fix the indentation level in Python, you need to ensure that the indentation in your code is consistent and correct.

Here are some steps you can follow:

Choose either spaces or tabs for indentation

Use either spaces or tabs consistently throughout your code.

Mixing spaces and tabs for indentation can cause errors.

Use the same number of spaces or tabs for each level of indentation

Consistently use the same number of spaces or tabs for each level of indentation.

Typically, four spaces per indentation level is the recommended convention.

Use a text editor with automatic indentation

A good code editor can automatically adjust indentation for you.

This makes it easier for you to spot and fix indentation errors.

We recommend using Python Mania’s online Python compiler.

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Check your code for indentation errors

Go through your code line by line and check the indentation of each line.

You have to make sure that you have intended each line within a code block correctly.

If you found any indentation error resolve it.

And your code should be working fine.

Code blocks such as if statements, for loops, and function definitions should have the correct indentation level to indicate the start and end of the block.

Fix the indentation errors

Once you’ve identified the indentation errors, fix them by adjusting the indentation level of the affected lines.

By following these steps, you can fix the indentation level in your Python code and ensure that it runs without errors.

How to fix unindent does not match any outer indentation level in Python?

The error unindent does not match any outer indentation level in Python is caused because of using spaces and tabs at the same time for indentation.

To fix this, you either have to use spaces or tabs.

Using the tabs for indentation is always recommended in Python.

Because this involves fewer chances of error.