如何使用正则表达式在pandas dataframe列中查找值

import pandas as pd
import re

data = {'Name': ['John', 'Alice', 'Bob', 'Charlie'],
        'Age': [25, 30, 35, 40],
        'Email': ['john@example.com', 'alice@example.com', 'bob@example.com', 'charlie@example.com']}
df = pd.DataFrame(data)

pattern = r'^[A-Za-z]+$'  # 正则表达式模式，匹配只包含字母的字符串
matches = df['Name'].str.contains(pattern, regex=True)

print(df[matches])

    Name  Age              Email
0   John   25   john@example.com
1  Alice   30  alice@example.com
2    Bob   35    bob@example.com