pandas 取整系列时出错
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/41015906/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Getting an error when rounding a series
提问by Mauro Gentile
I have a series of floats. It is the results of a data frame sum() operation. I need to round all its elements to integer but I get an error:
我有一系列的花车。它是数据帧 sum() 操作的结果。我需要将其所有元素四舍五入为整数，但出现错误：
[in]:
A= mins.sum().iloc[1:]/60
# this line works fine. The .iloc is to get rid of a text column.
[in]:
print(A)
[out]:
Min bad 249.5
Min pr-ul 967.57
intra com diff 178.05
Intra com diff 60 184.27
dtype: object
Now, if I try to round I get an error:
现在，如果我尝试四舍五入，我会收到一个错误：
[in]:
A.round()
[out]:
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-528-685b5302b717> in <module>()
3
4 print(A)
----> 5 A.round()
//anaconda/lib/python3.5/site-packages/pandas/core/series.py in round(self,decimals, *args, **kwargs)
1303 """
1304 nv.validate_round(args, kwargs)
-> 1305 result = _values_from_object(self).round(decimals)
1306 result = self._constructor(result, index=self.index).__finalize__(self)
1307
AttributeError: 'float' object has no attribute 'rint'
Can anyone tell me why is that and ho I can fix it? I guess that the root of the problem is because the Series is "object" type. But what is this? It only contains float numbers!!! it is the results of a data frame summarization
谁能告诉我为什么会这样，我可以解决它吗？我想问题的根源是因为系列是“对象”类型。但这是什么？它只包含浮点数！！！它是数据框汇总的结果
thank you in advance for helping
提前感谢您的帮助
回答by Jonathan Biemond
Cast the series to type float using .astype(float)as suggested by Mark Dickinson.
In your case you should use A.astype(float).round()
.astype(float)按照 Mark Dickinson 的建议，将系列转换为使用 float 类型。在你的情况下，你应该使用A.astype(float).round()
I ran into the same error rounding a column in a data frame, casting to a float solved it for me. Thanks to Mark Dickinson.
我在对数据框中的列进行四舍五入时遇到了同样的错误，转换为浮点数为我解决了这个问题。感谢马克·狄金森。
