创建管道并从 DataFrame 中删除一列 - Python Pandas
使用colDrop()pdpipe 库的方法从 Pandas DataFrame 中删除一列。首先,导入所需的 pdpipe 和 pandas 库及其各自的别名 -
import pdpipe as pdpimport pandas as pd
让我们创建一个 DataFrame。在这里,我们有两列 -
dataFrame = pd.DataFrame({
"Car": ['BMW', 'Lexus', 'Audi', 'Mustang', 'Bentley', 'Jaguar'],"Units": [100, 150, 110, 80, 110, 90]
}
)
要从 DataFrame 中删除列,请使用ColDrop()方法。在这里,我们将删除“单位”列 -
resDF = pdp.ColDrop("Units").apply(dataFrame)
示例
以下是完整的代码 -
import pdpipe as pdp输出结果import pandas as pd
# 创建数据帧
dataFrame = pd.DataFrame(
{
"Car": ['BMW', 'Lexus', 'Audi', 'Mustang', 'Bentley', 'Jaguar'],"Units": [100, 150, 110, 80, 110, 90]
}
)
print("DataFrame ...\n",dataFrame)
# 用 pdp 删除一行
dataFrame = pdp.ValDrop(['Jaguar'],'Car').apply(dataFrame)
print("\n DataFrame after removing a row...\n",dataFrame)
# 使用 pdp 删除列
resDF = pdp.ColDrop("Units").apply(dataFrame)
print("\nDataFrame after removing a column...\n",resDF)
这将产生以下输出 -
DataFrame ...Car Units
0 BMW 100
1 Lexus 150
2 Audi 110
3 Mustang 80
4 Bentley 110
5 Jaguar 90
Displaying after removing a row...
Car Units
0 BMW 100
1 Lexus 150
2 Audi 110
3 Mustang 80
4 Bentley 110
Displaying after removing a column...
Car
0 BMW
1 Lexus
2 Audi
3 Mustang
4 Bentley
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