Python Tabnanny Module
The tabnanny module is intended to be called as a script to check Python source files for ambiguous indentation. It detects if a file mixes tabs and spaces in a way that depends on the tab width (which can be confusing or lead to IndentationError).
Importing the Module
import tabnannyProgrammatic Usage
You can use tabnanny.check() to check a file or directory.
import tabnanny
# Check a specific file
tabnanny.check("myscript.py")If the file is clean, it produces no output. If there are issues, it prints them to stdout.
Command Line Usage
The most common way to use tabnanny is from the command line.
python -m tabnanny myscript.pyTo check an entire directory tree:
python -m tabnanny .Options
-v: Verbose mode. Prints a message for every file checked.-q: Quiet mode. Suppresses output for clean files (default).
python -m tabnanny -v myscript.py