fork(1) download 
  1. import re
  2. def extract_step(filename):
  3.     match = re.search(r"step_(\d+)", filename)
  4.     return int(match.group(1)) if match else -1
  5. print(extract_step("online_batch_step_379.csv"))
Success #stdin #stdout 0.18s 15428KB
comments (?)
stdin 
Standard input is empty
stdout 
379
https://ideone.com/m9YMUr
language:
Python 3 (python  3.12)
created:
6 days ago
visibility:
public

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