CODEWITHSUNDEEP
pythonregex
blue_zinc
blue_zinc

Reputation: 2500

Python Regex capture multiple sections within string

I have string that are always of the format track-a-b where a and b are integers.
For example:
track-12-29
track-1-210
track-56-1

How do I extract a and b from such strings in python?

Upvotes: 1

Views: 64

Answers (2)

hwnd
hwnd

Reputation: 70722

If it's just a single string, I would approach this using split:

>>> s = 'track-12-29'
>>> s.split('-')[1:]
['12', '29']

If it is a multi-line string, I would use the same approach ...

>>> s = 'track-12-29\ntrack-1-210\ntrack-56-1'
>>> results = [x.split('-')[1:] for x in s.splitlines()]
[['12', '29'], ['1', '210'], ['56', '1']]

Upvotes: 4

TigerhawkT3
TigerhawkT3

Reputation: 49320

You'll want to use re.findall() with capturing groups:

results = [re.findall(r'track-(\d+)-(\d+)', datum) for datum in data]

Upvotes: 2

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