新手编程和python。正在尝试强制类型(int)作为浮点型答案
新手编程和python。正在尝试强制类型(int)作为浮点型答案
提问于 2016-08-18 11:08:26
balance = 50 - 0.12 * 15
tracks_left = balance / 0.12
round (tracks_left, 0)
print 'you have', tracks_left,"to download"答案是，我已经尝试过round(tracks_left, 0)和int (tracks_left)。我做错了什么？
回答 2
Stack Overflow用户
发布于 2016-08-18 11:13:47
round(tracks_left, 0)不会改变tracks_left，而是返回一个新值。int(tracks_left)也是如此。
尝试：
tracks_left = round(tracks_left, 0)或者：
tracks_left = int(tracks_left)注意：int总是向下舍入。
Stack Overflow用户
发布于 2016-08-18 11:14:27
round(tracks_left, 0)不会改变tracks_left。它只是返回值。你必须将它分配给某个东西。
>>> balance = 50 - 0.12 * 15
>>> tracks_left = balance / 0.12
>>> tracks_left_rounded = round(tracks_left, 0)
>>> print('You have', tracks_left_rounded)
You have 402.0你也可以这样做：
>>> balance = 50 - 0.12 * 15
>>> tracks_left = round(balance / 0.12)您也可以尝试使用int
>>> tracks_left_rounded = int(tracks_left)
>>> print('You have', tracks_left_rounded)
You have 401我希望它能有所帮助！
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/39009379
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