CODEWITHSUNDEEP
pythoncoding-style
theRealWorld
theRealWorld

Reputation: 1208

What is the most pythonic way to exclude elements of a list that start with a specific character?

I have a list of strings. I want to get a new list that excludes elements starting with '#' while preserving the order. What is the most pythonic way to this? (preferably not using a loop?)

Upvotes: 9

Views: 34183

Answers (2)

jamylak
jamylak

Reputation: 133634

[x for x in my_list if not x.startswith('#')]

That's the most pythonic way of doing it. Any way of doing this will end up using a loop in either Python or C.

Upvotes: 27

hamstergene
hamstergene

Reputation: 24439

Not using a loop? There is filter builtin:

filter(lambda s: not s.startswith('#'), somestrings)

Note that in Python 3 it returns iterable, not a list, and so you may have to wrap it with list().

Upvotes: 11

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