Back to all reviewers

Optimize collection processing patterns

apache/airflow
Based on 4 comments
Python

Use Python's built-in efficient collection processing methods instead of manual implementations. This reduces code complexity and improves performance by leveraging optimized implementations.

Algorithms Python

Reviewer Prompt

Use Python’s built-in efficient collection processing methods instead of manual implementations. This reduces code complexity and improves performance by leveraging optimized implementations.

Key practices:

  1. Use list/dict comprehensions instead of multiple operations
  2. Leverage built-in functions like max() for finding extremes
  3. Use chain.from_iterable() for flattening sequences
  4. Utilize isinstance() with tuple of types

Example transformations:

# Instead of multiple set operations:
t_dags = {task.dag for task in tasks if not isinstance(task, tuple)}
t_dags_2 = {item[0].dag for item in tasks if isinstance(item, tuple)}
task_dags = t_dags | t_dags_2

# Use list comprehension:
task_dags = {
    task[0].dag if isinstance(task, tuple) else task.dag
    for task in tasks
}

# Instead of sorting and indexing:
items.sort(key=lambda x: x.end_date, reverse=True)
last_item = items[0] if items else None

# Use max():
last_item = max(items, key=lambda x: x.end_date) if items else None

# Instead of multiple isinstance checks:
if isinstance(log, chain) or isinstance(log, GeneratorType):
    ...

# Use tuple of types:
if isinstance(log, (chain, GeneratorType)):
    ...
4
Comments Analyzed
Python
Primary Language
Algorithms
Category

Source Discussions