Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Detection of ambiguous indentation in python
Indentation is an important feature of Python syntax. Code blocks in function, class or loops are required to follow same indent level for statements in it. The tabnanny module in Python's standard library is able to detect any violation in this stipulation.
This module is primarily intended to be used in command line mode with –m switch. However, it can also be imported in an interpreter session.
Command line usage
python –m tabnanny –q example.py
For verbose output use –v switch
python –m tabnanny –v example.py
Following functions are defined in tabnanny module for checking indentation programmatically.
check()
This function checks for ambiguously indented lines in a given file. You can also pass a directory as parameter. All file in it will be recursively checked.
Example
import tabnanny
tabnanny.check('example.py')tabnanny.verbose − This flag indicates whether to print verbose messages. This is incremented by the -v option if called as a script.
tabnanny.filename_only − This flag indicates whether to print only the filenames of files containing whitespace related problems. This is set to true by the -q option if called as a script.
process_tokens() −
This function is used by check() to process tokens generated by the tokenize module. This function raises NannyNag exception if an ambiguous indent is detected. It is captured and handled in check().
371 Views
