dataframe按列求百分比
时间: 2023-11-18 16:13:53 浏览: 327
Python 数据操作教程,如何从 PANDAS DATAFRAME 中删除一列或多列
要按列求百分比,可以使用Pandas库中的`div`方法和`sum`方法来实现。其中,`div`方法用于将每个元素除以该列的和,`sum`方法用于计算每列的总和。具体代码如下所示:
```python
import pandas as pd
# 创建一个示例DataFrame
df = pd.DataFrame({'A':[1, 2, 3], 'B':[4, 5, 6], 'C':[7, 8, 9})
# 按列求百分比
result = df.div(df.sum())
# 输出结果
print(result)
```
这样,就可以得到按列求百分比后的DataFrame。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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