作业
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L1=['Hello','World',15,'IBM'] L2=[s.lower() for s in L1 if isinstance(s,str)]
测试:
print(L2) if L2 == ['hello', 'world', 'apple']: print('测试通过!') else: print('测试失败!')
['hello', 'world', 'ibm'] 测试失败!
- 1
L1=['Hello','World',15,'IBM'] L2=[s.lower() for s in L1 if isinstance(s,str)]
print(L2) if L2 == ['hello', 'world', 'apple']: print('测试通过!') else: print('测试失败!')
['hello', 'world', 'ibm'] 测试失败!
YY天很晴
L=['Hello','World',15,'IBM'] [s.lower() for s in L if isinstance(s,str)]