Question

Sorry for the beginner python question, but I cant find anywhere how to do this, so bear with me.

I am trying to extract the values from a file containing keyword followed by a value:
Example:

length 95 width 332 length 1253 length 345 width 22

How do I extract all the values assosiated with the keyword “length” for example?

Answer 1

>>> s = 'length 95 width 332 length 1253 length 345 width 22'
>>> import re
>>> re.findall(r'length (\w+)', s)
['95', '1253', '345']

This would do too, but it has additional constraints:

>>> sp = s.split()
>>> [sp[i+1] for i, l in enumerate(sp) if l == 'length']
['95', '1253', '345']