将字典应用于包含字符串的dataframe列

import pandas as pd

data = {'col1': ['apple', 'banana', 'orange'],
        'col2': ['red', 'yellow', 'orange']}
df = pd.DataFrame(data)

replace_dict = {'apple': 'fruit', 'banana': 'fruit', 'orange': 'fruit'}

df['col1'] = df['col1'].map(replace_dict)

import pandas as pd

# 创建DataFrame
data = {'col1': ['apple', 'banana', 'orange'],
        'col2': ['red', 'yellow', 'orange']}
df = pd.DataFrame(data)

# 创建要更新的字典
replace_dict = {'apple': 'fruit', 'banana': 'fruit', 'orange': 'fruit'}

# 将字典应用于DataFrame列
df['col1'] = df['col1'].map(replace_dict)

# 打印更新后的DataFrame
print(df)

   col1     col2
0  fruit      red
1  fruit   yellow
2  fruit   orange