L1 = ['Hello', 'World', 'IBM', 'Apple'] L2 = ['Hello', 'World', 18, 'Apple', None]
for i in L1: if isinstance(i,str): print(i.lower()) else: print("False") for s in L2: if isinstance(s,str): print(s.lower()) else: print("__False")
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L1 = ['Hello', 'World', 'IBM', 'Apple'] L2 = ['Hello', 'World', 18, 'Apple', None]
for i in L1: if isinstance(i,str): print(i.lower()) else: print("False") for s in L2: if isinstance(s,str): print(s.lower()) else: print("__False")