如果条目中存在str，则更改Pandas Dataframe中的条目

import pandas as pd

data = {'Name': ['John', 'Emma', 'Mike'],
        'Age': [25, 28, 30],
        'City': ['New York', 'London', 'Paris']}
df = pd.DataFrame(data)

df.loc[0, 'City'] = 'San Francisco'

df.loc[df['Age'] > 28, 'City'] = 'Berlin'

df['Age'] = [26, 29, 31]

df.replace('London', 'Tokyo', inplace=True)

import pandas as pd

data = {'Name': ['John', 'Emma', 'Mike'],
        'Age': [25, 28, 30],
        'City': ['New York', 'London', 'Paris']}
df = pd.DataFrame(data)

df.loc[0, 'City'] = 'San Francisco'
df.loc[df['Age'] > 28, 'City'] = 'Berlin'
df['Age'] = [26, 29, 31]
df.replace('London', 'Tokyo', inplace=True)

print(df)