int函數(shù)處理小數(shù)怎么不可以了呢？

心若寒江雪

[root@localhost opt]# cat input.py
#!/usr/bin/env python
num = raw_input("Enter a number:")
print int(num)
[root@localhost opt]# ./input.py   
Enter a number:2.3
Traceback (most recent call last):
  File "./input.py", line 3, in <module>
    print int(num)
ValueError: invalid literal for int() with base 10: '2.3'
[root@localhost opt]#

prints

因?yàn)?.3是浮點(diǎn)數(shù)，不是整數(shù)
float(num)

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