ValueError: invalid literal for int() with base 10

python需要进行int转型的字符串仅仅包含数字，这时候用round(float(“1.0”))

>>> int(1.0)
1
>>> int(‘1.0’)
Traceback (most recent call last):
 File “<stdin>”, line 1, in <module>
ValueError: invalid literal for int() with base 10: ‘1.0’
>>> round(float(‘1.0’))
1.0
>>> int(round(float(‘1.0’)))
1
>>>