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  1.  
  2. import re
  3. s = 'feature.append(freq_and_feature(text, freq))'
  4. print([x for x in re.split(r'[\W_]+', s) if x])
Success #stdin #stdout 0.01s 8968KB
stdin
Standard input is empty
stdout
['feature', 'append', 'freq', 'and', 'feature', 'text', 'freq']