如何更新字符串的pandas dataframe列中的子串

import pandas as pd

data = {'Name': ['John', 'Alice', 'Bob'],
        'Age': [25, 30, 35],
        'City': ['New York', 'London', 'Paris']}
df = pd.DataFrame(data)

df['City'] = df['City'].str.replace('New', 'Old')

print(df)

   Name  Age     City
0  John   25  Old York
1 Alice   30   London
2   Bob   35    Paris