Pythonic式的筛选列然后创建新列的方法

import pandas as pd

data = {'Name': ['Alice', 'Bob', 'Charlie', 'David'],
        'Age': [25, 30, 35, 40],
        'Gender': ['Female', 'Male', 'Male', 'Male']}
df = pd.DataFrame(data)

filtered_df = df[df['Age'] > 30]

filtered_df['New Column'] = filtered_df['Age'] * 2

import pandas as pd

data = {'Name': ['Alice', 'Bob', 'Charlie', 'David'],
        'Age': [25, 30, 35, 40],
        'Gender': ['Female', 'Male', 'Male', 'Male']}
df = pd.DataFrame(data)

filtered_df = df[df['Age'] > 30]
filtered_df['New Column'] = filtered_df['Age'] * 2

print(filtered_df)

      Name  Age Gender  New Column
2  Charlie   35   Male          70
3    David   40   Male          80