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请教下 哪里错了？？

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小小小孙1086541200

#1 Created at ... [Delete] [Delete and Lock User]

input() 12.3 '12.3' a=input() 12.3 int(a) Traceback (most recent call last): File "<pyshell#43>", line 1, in <module> int(a) ValueError: invalid literal for int() with base 10: '12.3' a=5.9 int(a) 5 a=input() 1.1 a '1.1' float(a) 1.1 int(a) Traceback (most recent call last): File "<pyshell#49>", line 1, in <module> int(a) ValueError: invalid literal for int() with base 10: '1.1'

长风秋雁11

#2 Created at ... [Delete] [Delete and Lock User]

float(a)只是float(a)值为1.1， 而a并没有改变，仍然是'1.1' int可以把1.1变为整数，但是不能把'1.1'变为整数。

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