列表推导式将大写改小写，小写改大写

1 = ['Hello','World',10,'IBM','Apple']

res = [value.lower() if isinstance(value,str) else value for value in 1]

res = [value.lower() for value in 1 if isinstance(value,ste)]

res = [value.upper() for value in 1 if isinstance(value,str)]

res = [value.upper() if isinstance(value,str) else value for value in 1]