Python 如何在dataframe中解压缩列表列
我有一个Python 如何在dataframe中解压缩列表列,python,python-3.x,pandas,dataframe,Python,Python 3.x,Pandas,Dataframe,我有一个熊猫数据框,格式如下: age begin end product_id 0 40 1578178800 1579388400 [3, 4] 1 30 1578178800 1579388400 [3, 4, 6, 2, 5, 1] 2 30 1578178800 1578265200 [6] 3 58 1578178800 1578265200 [6] 4 30
熊猫数据框
,格式如下:
age begin end product_id
0 40 1578178800 1579388400 [3, 4]
1 30 1578178800 1579388400 [3, 4, 6, 2, 5, 1]
2 30 1578178800 1578265200 [6]
3 58 1578178800 1578265200 [6]
4 30 1578178800 1578265200 [6]
因为产品id是客户选择的产品的组合。例如:1-电子,2-汽车,3-配件,4-机器人,5-培训,6-其他
我想要数据框
的格式如下,但不包括其周围的列表:
age begin end product_id
0 40 1578178800 1579388400 accessories, Robots
1 30 1578178800 1579388400 accessories, Robots, Other, automobiles, Training, electronics
2 30 1578178800 1578265200 Other
3 58 1578178800 1578265200 Other
4 30 1578178800 1578265200 Other
通过字典对映射值使用列表理解并转换为连接字符串:
d = {1:'electronics',
2: 'automobiles',
3:'accessories',
4:'Robots',
5:'Training',
6: 'Other'}
df['product_id'] = df['product_id'].map(lambda x: ', '.join(d[y] for y in x))
print (df)
age begin end \
0 40 1578178800 1579388400
1 30 1578178800 1579388400
2 30 1578178800 1578265200
3 58 1578178800 1578265200
4 30 1578178800 1578265200
product_id
0 accessories, Robots
1 accessories, Robots, Other, automobiles, Train...
2 Other
3 Other
4 Other
或:
@微笑谢谢。我得到了错误:KeyError:'3'可能有什么问题?@Pythonista-这意味着
3
不是整数,而是字符串'3'
,所以尝试将d={1:'electronics',2:'automobiles',3:'accessories',4:'Robots',5:'Training',6:'Other'}
更改为{'1':'electronics','2':'automobiles','3':'accessories','4':'Robots','5':'Training','6':'Other'}
df['product_id'] = [', '.join(d[y] for y in x) for x in df['product_id']]