python如何对两列csv数据计算器数据的缺失率
时间: 2023-08-11 13:19:12 浏览: 128
可以使用Python中的pandas库来处理CSV数据并计算缺失率。
首先,使用pandas库中的read_csv函数将CSV文件读入到一个DataFrame对象中:
```python
import pandas as pd
df = pd.read_csv('file.csv')
```
然后,可以使用DataFrame对象的isnull函数来检查缺失值,并使用sum函数计算每列缺失值的数量:
```python
missing_values = df.isnull().sum()
```
最后,将每列缺失值数量除以总行数即可得到每列数据的缺失率:
```python
missing_rate = missing_values / len(df)
```
完整的代码示例如下:
```python
import pandas as pd
# 读取CSV文件
df = pd.read_csv('file.csv')
# 计算缺失值数量
missing_values = df.isnull().sum()
# 计算缺失率
missing_rate = missing_values / len(df)
# 输出结果
print(missing_rate)
```
注意:上述代码中的'file.csv'需要替换为你自己的CSV文件名。
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