<p>下面是一个示例,可以满足您的需要:</p>
<pre><code>import pandas as pd
df1 = pd.DataFrame({'A': [0, 1, 2, 3],
'B': [0, 1, 2, 3],
'C': [0, 1, 2, 3],
'D': [0, 1, 2, 3]},
index=[0, 1, 2, 3])
df2 = pd.DataFrame({'A': [4, 5, 6, 7],
'B': [4, 5, 6, 7],
'C': [4, 5, 6, 7],
'D': [4, 5, 6, 7]},
index=[0, 1, 2, 3])
df3 = pd.DataFrame({'A': [8, 9, 10, 11],
'B': [8, 9, 10, 11],
'C': [8, 9, 10, 11],
'D': [8, 9, 10, 11]},
index=[0, 1, 2, 3])
df4 = pd.concat([df1, df2, df3])
df5 = pd.concat([df1, df2, df3], ignore_index=True)
print(df4)
print('\n\n')
print(df5)
print(f"Average of column A = {df4['A'].mean()}")
</code></pre>
<p>你会有的</p>
<pre><code> A B C D
0 0 0 0 0
1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
0 4 4 4 4
1 5 5 5 5
2 6 6 6 6
3 7 7 7 7
0 8 8 8 8
1 9 9 9 9
2 10 10 10 10
3 11 11 11 11
A B C D
0 0 0 0 0
1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
4 4 4 4 4
5 5 5 5 5
6 6 6 6 6
7 7 7 7 7
8 8 8 8 8
9 9 9 9 9
10 10 10 10 10
11 11 11 11 11
Average of column A = 5.5
</code></pre>