fork(1) download 
  1. import re
  2. s = "this is a sample\\nstring\\\\ncontaining\nall cases and one more\\n\nadded"
  3. print(re.sub(r"(\\\\n)|\\n|\n", lambda x: r"<br>" if not x.group(1) else x.group(), s))
Success #stdin #stdout 0.02s 6960KB
comments (?)
stdin 
Standard input is empty
stdout 
this is a sample<br>string\\ncontaining<br>all cases and one more<br><br>added
https://ideone.com/Abgq0A
language:
Python (cpython 2.7.16)
created:
7 years ago
visibility:
public

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