初始化一定列数的dataframe
时间: 2023-11-18 09:53:40 浏览: 32
要初始化一定列数的DataFrame,你可以使用pandas的DataFrame构造函数,并指定columns参数为一个包含所需列数的列表。例如,要初始化一个包含3列的DataFrame,你可以使用以下代码:
```python
import pandas as pd
columns = ['column1', 'column2', 'column3']
df = pd.DataFrame(columns=columns)
```
这将创建一个空的DataFrame,其中包含3列,并使用指定的列名进行命名。你可以根据需要添加数据到DataFrame中。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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