This post is just some notes I took while watching the following video:
ITM Antipattern The initialize then modify (ITM) antipattern is where something it initialized outside a loop and then it is modified in the loop. For change 1 we used enumerate, and for change 2 we used a list comprehension.
Redundant Comments - Remove redundant comments. - Redundant comments just restate the literal command.
Index ITM - Initializing index outside of a loop and then incrementing it inside the loop. - Solution: Use enumerate.
Deprecated Print Statements - Delete any print statements that are no longer needed.
List Comprehensions - Replace for loops with list comprehensions when the list copmrehension itself will be readible.
Deprecated Conrol Flow - Delete control flow (if/elif/else) that won’t be relevant to future use cases.
Iterable Slicing - Use slicing instead of looping over an iterable when the location of the target information is reliable.
Changes 6 and 7 we have seen above.
Try/Except/Pass - Remove try <type_cast> except pass patterns. - Replace with a conditional expression <type_cast> if <condition> else <other>.
Specialized Libraries - Use existing tools designed for the task instead of maintaining your legacy code.
Some principles:
- Know your algorithms
- Know your collections
- Know your libraries
Some useful features mentioned in the Python Bytes podcast:
- list comprehensions
- generator expressions
- slice assignment
- iterable unpacking