In Python, program layout matters a lot. A small alteration in your indentation can cause syntax errors and disrupt the execution of the code. In Python, the indented block groups statements together. This tutorial will guide you on how to fix indentation errors in Python.
Understanding Indented Blocks in Python
An indented block is a group of statements in Python that is supposed to be executed together. Indentation in Python is not only used for readability but also plays a significant role in defining the grouping of statements.
Identifying the Issue
Python uses indents to define levels of blocks of code which other languages might use curly brackets for. If you see the error “IndentationError: expected an indented block,” it’s because Python expected an indented block that isn’t there.
How to Fix it
Python uses 4 spaces per indentation level. We need to ensure that all code within the same block level is aligned vertically. Below is an example of a code with an indentation issue and then its corrected version:
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def example_func(): print("This is an example function.") |
This code will generate an IndentationError.
IndentationError: expected an indented block after function definition on line 1
The correct code should be:
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def example_func(): print("This is an example function.") |
Use a Text Editor with Python Support
A good way to avoid indentation errors is to use a text editor that supports Python syntax. Editors like Visual Studio Code or Atom will automatically indent lines correctly and highlight any errors.
The Full Code
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def example_func(): print("This is an example function.") |
Output
"This is an example function."
Conclusion
Indentation plays a key role in Python, and understanding how it is used can help you write code that’s both correct and easy to read. Fixing indentation issues generally involves ensuring that blocks of code are properly aligned, using an IDE or text editor that supports Python.