L1 = ['Hello','world',18,'Apple',None] L2 = [s.lower() for s in L1 if isinstance(s,str)] print(L2)
Sign in to make a reply
JasF
-- coding：utf-8 --
L1 = ['Hello','world',18,'Apple',None] L2 = [s.lower() for s in L1 if isinstance(s,str)] print(L2)