英文:
How to use square brackets as part of a variable name in pandas?
问题
我正在尝试使用pandas.assign函数。该函数将另一列添加到现有列中。
例如：
DataFrame1 = DataFrame1.assign(NewColName=[1,2,3,4])
会添加一个名为"NewColName"的新列。然而，我的理想列名应该是"Weight [kg]"，当我尝试使用"[ ]"时，函数停止工作。我尝试过在"[ ]"周围应用%'s、\'s和其他类似的方法，但都没有成功。
我知道我可以在给定任何名称后重命名列，例如"PlaceHolderName"，但是否有一行代码的方法来做到这一点？该函数不接受列名在" "内，所以它与像Index="[[asdsa][[" ....这样的东西不同，我可以在" "内输入任何我想要的内容。
谢谢。
英文:
I am trying to use pandas.assign function. The function adds another column into an existing column.
For example
DataFrame1 = DataFrame1.assign(NewColName=[1,2,3,4])
Adds a new column named "NewColName". However, my ideal column name would be "Weight [kg]", and when I try to use "[ ]" the function ceases to work. I have tried applying %'s \'s and other similar methods around the "[ ]" with no success.
I know I can just rename the column after giving it any name, such as "PlaceHolderName", but is there a way to do this with one line of code? That function does not accept column name inside<br> " ", so it feels different compared to something like Index="[[asdsa][[" .... where I can type whatever I want inside the " ".
Thank you.
答案1
得分: 2
使用字典拆包将名称作为参数传递：
DataFrame1.assign(**{'Weight [kg]': [1,2,3,4]})
英文:
Use dictionary unpacking to pass the name as parameter:
DataFrame1.assign(**{'Weight [kg]': [1,2,3,4]})
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