python转换为int型错误

[long552900806]

choicetime0=choice_3+choice_4
print choicetime0
choice_time=int(choicetime0)




Traceback (most recent call last):
File "D:\程序\python\ionogram_measure.py", line 826, in OnFindMe
choice_time1=int(choicetime01)
ValueError: invalid literal for int() with base 10: ''

print choicetime0 输出的是0300，然后一转换就报上面的错了

[bugs2k]

这个是多少呢：
print repr(choicetime0)

[angel_su]

print repr(choicetime01)看看字符串的实际内容...

[long552900806]

[Quote=引用 1 楼 的回复:]
Python code

这个是多少呢：
print repr(choicetime0)
[/Quote]
u'0300'，呵呵怎么弄啊

[long552900806]

[Quote=引用 1 楼 的回复:]
Python code

这个是多少呢：
print repr(choicetime0)
[/Quote]
u'0300' ，呵呵，这怎么弄啊

[bugs2k]

>>> c = 'abc'
>>> i = int(c)
Traceback (most recent call last):
  File "<pyshell#18>", line 1, in <module>
    i = int(c)
ValueError: invalid literal for int() with base 10: 'abc'
>>> c = u'0300'
>>> i = int(c)
>>> c,i
(u'0300', 300)
>>> 

[bugs2k]

[Quote=引用楼主 的回复:]
Traceback (most recent call last):
File "D:\程序\python\ionogram_measure.py", line 826, in OnFindMe
choice_time1=int(choicetime01)
ValueError: invalid literal for int() with base 10: ''
[/Quote]

说明你的int函数参数为空字符串，而不是你上面说的

>>> c = ''
>>> i = int(c)
Traceback (most recent call last):
  File "<pyshell#26>", line 1, in <module>
    i = int(c)
ValueError: invalid literal for int() with base 10: ''
>>> 

[long552900806]

[Quote=引用 6 楼 的回复:]
引用楼主 的回复:
Traceback (most recent call last):
File "D:\程序\python\ionogram_measure.py", line 826, in OnFindMe
choice_time1=int(choicetime01)
ValueError: invalid literal for int() with base 10: ''

……
[/Quote]
如果是空的怎么会输出u300呢

[long552900806]

我明白了，谢谢您