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  1. import re
  2. def m(r, s):
  3.     mtc = re.match(r, s)
  4.     if mtc:
  5.         return s
  6.     return "false"
  7. def italic(s):
  8.     if  m(r'\*{2}[^\*]+\*{2}', s) == 'false':
  9.         return re.sub(r'\*([^*]+)\*', r'<em>\1</em>', s)
  10.     return s
  11. print(italic('my plain text'))
  12. print(italic('*my italic text*'))
  13. print(italic('**now it is bold**'))
Success #stdin #stdout 0.1s 10088KB
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stdin
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Standard input is empty
stdout
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my plain text
<em>my italic text</em>
**now it is bold**
https://ideone.com/bXJqGh
language:
Python 3 (python  3.9.5)
created:
10 years ago
visibility:
public

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