Pandas:通过过滤现有列来创建新列

import pandas as pd

# 创建一个示例数据集
data = {'Name': ['Alice', 'Bob', 'Charlie', 'David'],
        'Age': [25, 30, 35, 40],
        'Gender': ['Female', 'Male', 'Male', 'Male']}
df = pd.DataFrame(data)

# 通过过滤现有列来创建新列
df['IsAdult'] = df['Age'] >= 18

print(df)

      Name  Age  Gender  IsAdult
0    Alice   25  Female     True
1      Bob   30    Male     True
2  Charlie   35    Male     True
3    David   40    Male     True