从 python 数据框列项中删除引号和括号

Question

df1

         Place                             Actor
['new york','washington']         ['chris evans','John']    
['new york','los angeles']        ['kate','lopez']

我想从每列项目中删除括号和引号：

预期输出：

df1

         Place                 Actor
new york,washington        chris evans,John   
new york,los angeles       kate,lopez

我的尝试：

cols = [Place,Actor]
df1[cols].apply(lambda x : x [' + ', '.join(df1[cols]) + ']')
   

Answer 1

使用Series.str.join：

cols = ['Place','Actor']
df1[cols] = df1[cols].apply(lambda x : x.str.join(', '))