Indentation errors in Python typically occur due to inconsistent use of spaces and tabs. Python requires consistent indentation to define code blocks. Ensure you use either spaces or tabs consistently throughout your code.

Indentation errors are among the most common issues faced by Python programmers, particularly beginners. Python uses indentation to define the structure and flow of the program, which is different from many other programming languages that rely on braces or keywords. An IndentationError occurs when the indentation levels of code blocks are inconsistent. For example, if a function starts with a tab and subsequent lines use spaces, Python may not interpret the blocks correctly. To resolve this, it is crucial to choose either spaces or tabs and stick to that choice throughout the script. A common convention is to use four spaces for each indentation level, as recommended by PEP 8, Python's style guide. Many modern code editors can be configured to automatically convert tabs to spaces, helping prevent these errors. Additionally, reviewing your code visually or using linters can identify indentation issues before running the program. By adhering to consistent indentation practices, you can avoid frustration and ensure that your Python code runs smoothly.