Welcome to python_tips’s documentation!

Document the best practice in python that may be used during development.

Contents:

• Boolean
• Class
  • 1. Don’t access the private attributes from outside.
  • 2. __init__ do not use return statement.
  • 3. Do not dynamically creating variable.
• Decorator
• Exception
  • 1. subclass of Exception need to place before parent Exception class
  • 2. Secure your exception
• Function
  • 1. Do not use mutable objects as an argument
  • 2. Do not return more than one variable type from function call.
  • 3. Do not use global statement.
  • 4. Return more than one result using nameturple.
• Import
  • 1. Don’t import module using *
• Set
• Security
  • 1. avoid the exec function.
• Lambda
  • 1. Don’t use lambda with anonymously.
• List
  • 1. unpack the variable in list using explicit unpacking.
  • 2. Using zip() to iterate over a pair of lists.
  • 3. Use list comprehension instead of map().
  • 4. Check for the empty list.
  • 5. initialization on list.
• Loop
  • 1. else clause of the loop
  • 2. Use enumerate instead of len to access each element.
• None
• PEP8
  • 1. Python code indented with 4 spaces.
  • 2. None Compare.
  • 3. boolean Compare.
  • 4. Type comparison.
  • 5. Only use the is operator to check the exact identity of two references.
  • 6. Duck Type
• Performance
  • 1. Don’t check if key in list.
  • 2. Use iteritems() to iterate over large dictionary.
  • 3. String Concatenation.
• With
  • 1. open file with with keyword to prevent memory issues.

Indices and tables

• Index
• Module Index
• Search Page