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  1. import re
  2.  
  3. regex = r"[+ →]+"
  4.  
  5. test_str = "N2 + CH4 → HCN + NH3"
  6.  
  7. print(re.split(regex, test_str))
Success #stdin #stdout 0.02s 9564KB
stdin
Standard input is empty
stdout
['N2', 'CH4', 'HCN', 'NH3']