如何将字符串变量分配给数据框名称 [英] How to assign a String variable to a dataframe name

问题描述

我遇到了一个问题，这是一个 for 循环程序.如下所示:

I had a problem, which is a for loop program.like below:

list = [1,2,3,4]

for index in list:
    new_df_name = "user_" + index
    new_df_name = origin_df1.join(origin_df2,'id','left')

但new_df_name"只是一个变量和字符串类型.

but the "new_df_name" is just a Variable and String type.

如何实现这些?

推荐答案

我想，你真正需要的是有一个数据框列表(不需要有任何特定名称)，然后将它们联合在一起.

I assume, what you really need is to have a list of dataframes (which non necessary have any specific names) and then union them all together.

dataframes = [df1, df2, df3, etc... ]

res_df, tail_dfs = dataframes[0], dataframes[1:]
for df in tail_dfs:
  res_df = res_df.unionAll(df)

更新.评论中描述的联合更好的选择.

upd. even better option to union described in comment.

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