追加到Pandas中的一个空DataFrame吗? [英] Appending to an empty DataFrame in Pandas?

问题描述

是否可以将其追加到不包含任何索引或列的空数据框中?

Is it possible to append to an empty data frame that doesn't contain any indices or columns?

我已经尝试过这样做，但是最后总是得到一个空的数据框.

I have tried to do this, but keep getting an empty dataframe at the end.

例如

df = pd.DataFrame()
data = ['some kind of data here' --> I have checked the type already, and it is a dataframe]
df.append(data)

结果如下:

Empty DataFrame
Columns: []
Index: []

推荐答案

应该有效:

>>> df = pd.DataFrame()
>>> data = pd.DataFrame({"A": range(3)})
>>> df.append(data)
   A
0  0
1  1
2  2

但是 append不能就地发生，因此，如果需要，您必须存储输出:

But the append doesn't happen in-place, so you'll have to store the output if you want it:

>>> df
Empty DataFrame
Columns: []
Index: []
>>> df = df.append(data)
>>> df
   A
0  0
1  1
2  2

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