Extract int digits and float number from a python string

Question

I have a string for example:

str1 = "'107.8X98x3.75'"
[107.8, 98, 3.75]
str2 = 'L=130.5mm;L=90mm'
[130.5, 90]
str3 = '圓278.5x15t 304'
[278.5, 15, 304]

I know how to extract by int and float, but I don't want to miss which the numbers appear.

I am not sure why this is downgraded while this title is visited more than 2k. — Joonho Park
– Joonho Park, Commented Feb 16, 2021 at 7:51

Guillaume Jacquenot · Accepted Answer · 2016-11-28 09:22:20Z

11

How about regular expressions?

Example

>>> import re
>>> str1="107.8X98x3.75"
>>> re.findall(r'\d+(?:\.\d+)?', str1)
['107.8', '98', '3.75']

edited Nov 28, 2016 at 9:22

Guillaume Jacquenot

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answered Nov 28, 2016 at 9:20

nu11p01n73R

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1 Comment

Joonho Park Over a year ago

I'am adding some explanation for regex: r for raw expression (I am not sure this is necessary), \d+ some digits whether followed by (<regex2>) or not due to ( ) '?' (0 or 1 option). <regex2> is '?:' uncapture this group enclosed by ( ), '\.' is literal dot rather than use dot as metacharacter, followed by \d+ digits then it becomes ".123".

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