Il 05/08/2021 11:40, Jach Feng ha scritto:
I want to distinguish between numbers with/without a dot attached:
text = 'ch 1. is\nch 23. is\nch 4 is\nch 56 is\n'
re.compile(r'ch \d{1,}[.]').findall(text)
['ch 1.', 'ch 23.']
re.compile(r'ch \d{1,}[^.]').findall(text)
['ch 23', 'ch 4 ', 'ch 56 ']
I can guess why the 'ch 23' appears in the second list. But how to get rid of
it?
--Jach
import re
t = 'ch 1. is\nch 23. is\nch 4 is\nch 56 is\n'
r = re.compile(r'(ch +\d+\.)|(ch +\d+)', re.M)
res = r.findall(t)
dot = [x[1] for x in res if x[1] != '']
udot = [x[0] for x in res if x[0] != '']
print(f"dot: {dot}")
print(f"undot: {udot}")
out:
dot: ['ch 4', 'ch 56']
undot: ['ch 1.', 'ch 23.']
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