我有以下DataFrame:
Date Year Month Day Security Trade Value
0 2011-01-10 00:00:00 2011 1 10 AAPL Buy 1500
1 2011-01-13 00:00:00 2011 1 13 AAPL Sell 1500
当我将此内容写入csv时,会在文件开头创建一个额外的列:
,Date,Year,Month,Day,Security,Trade,Value
0,2011-01-10 00:00:00,2011,1,10,AAPL,Buy,1500
1,2011-01-13 00:00:00,2011,1,13,AAPL,Sell,1500
我该如何解决这个问题?
答案 0 :(得分:5)
“额外列”是索引。您可以通过传递index=None
来抑制此问题,例如:
>>> df
A
0 10
1 20
2 30
>>> df.to_csv("out.csv")
>>> !cat out.csv
,A
0,10
1,20
2,30
>>> df.to_csv("out.csv", index=None)
>>> !cat out.csv
A
10
20
30