String Manipulation

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Regex

Common pattern

r'_\d+$' # e.g. xxxxx_12

Replace pattern with xxx:

import re
target_text = "hahahahha_111"
re.sub(r'_\d+$', '', target_text)
# hahahahha

Search pattern:

import re
target_text = "hahahah_111"
m = re.search(r'_\d+$',target_text)
if m is not None:
    get_str = m.group()
    print(get_str)
else:
    print("no match.")
# output: _111

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