[英]Pandas swap column names with column values
我有一个 df 看起来像这样:
User Chat_People Talk_People Schedule_Time
1 first second third
2 second third first
我想把它转换成这样:
User First Second Third
1 Chat_People Talk_People Schedule_Time
2 Schedule_Time Chat_People Talk_People
我试着做:
df["First"] = df.apply((lambda x: col_name for col_name in ["Chat_People","Talk_People","Schedule_Time"] if x[col_name] == "first"), axis=1)
但是我遇到了:
TypeError: cannot create 'generator' instances
任何帮助将非常感激!
melt
然后pivot
out = df.melt('User').pivot('User','value','variable').reset_index()
out
value User first second third
0 1 Chat_People Talk_People Schedule_Time
1 2 Schedule_Time Chat_People Talk_People
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