Python:如何从pandas dataframe列中提取多个字符串

import pandas as pd

# 创建一个示例DataFrame
data = {'column_name': ['string1 abc', 'string2 def', 'string3 ghi']}
df = pd.DataFrame(data)

# 使用正则表达式提取多个字符串
df['extracted_strings'] = df['column_name'].str.findall(r'\b\w+\b')

print(df)

    column_name extracted_strings
0  string1 abc    [string1, abc]
1  string2 def    [string2, def]
2  string3 ghi    [string3, ghi]

import pandas as pd

# 创建一个示例DataFrame
data = {'column_name': ['string1 abc', 'string2 def', 'string3 ghi']}
df = pd.DataFrame(data)

# 使用str.split()方法提取多个字符串
df['extracted_strings'] = df['column_name'].str.split()

print(df)

    column_name extracted_strings
0  string1 abc   [string1, abc]
1  string2 def   [string2, def]
2  string3 ghi   [string3, ghi]