Complexity in list comprehensions
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- Python
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Description
Having asdf.py:
elements = [0, 1, 2, 3, 4]
ignore = [1, 2]
def loop():
for x in elements:
if x in ignore:
continue
print(x)
def comprehension():
filtered = [x for x in elements if x not in ignore]
for x in filtered:
print(x)
loop()
print('----')
comprehension()
The McCabe complexity in loop() seems to be higher than in comprehension():
$ python -m mccabe asdf.py
5:0: 'loop' 3
12:0: 'comprehension' 2
Is that really expected? Should not fors and ifs in list comprehensions count towards total complexity?
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Research direction
Reproduce the reported output with the asdf.py example by running python -m mccabe asdf.py. Then inspect how McCabe calculates complexity for loops, conditionals, and list comprehensions, and determine the expected counting behavior before adding focused coverage for the chosen result.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100