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  1. import re
  2. str_l  = ["aaa。bbb。","aaa。","aaa"]
  3. for str1 in str_l:
  4.   print(str1, '=>', bool(re.search(r'^[^。]*。?$', str1)))
  5.  
  6. rx = re.compile(r'^[^。]*。?$')
  7. print( list(filter(rx.search, str_l)) )
Success #stdin #stdout 0.03s 9564KB
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Standard input is empty
stdout
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aaa。bbb。 => False
aaa。 => True
aaa => True
['aaa。', 'aaa']
https://ideone.com/EnxvD1
language:
Python 3 (python  3.9.5)
created:
1 year ago
visibility:
secret

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