2个dataframe 竖着拼

要将两个DataFrame竖着拼接，可以使用pandas库中的concat函数，并指定axis参数为0。下面是一个示例代码：

import pandas as pd

df1 = pd.DataFrame([10,12,13])
df2 = pd.DataFrame([22,33,44,55])

result = pd.concat([df1, df2], axis=0)

其中，df1和df2是要拼接的两个DataFrame，concat函数的axis参数表示拼接的方向，0表示竖直方向。拼接后的结果保存在result变量中。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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