Question

我想获得一个看起来像这样的列表列表（让我们称之为'All'）：

[['Albany County, Wyoming', '56', '001'],
 ['Big Horn County, Wyoming', '56', '003'],
 ['Campbell County, Wyoming', '56', '005'],...

并将其转换为如下所示的数据框：

COUNTY            STATE     FIPS1 FIPS2
'Albany County'   'Wyoming'  '56'  '001'
'Big Horn County' 'Wyoming'  '56'  '003'
'Campbell County' 'Wyoming'  '56'  '005'

这是我到目前为止列出的清单：

for index, line in enumerate(All):
    All[index] = line[0].split(','), line[1:]

pd.DataFrame(All)

但这又回来了：

                            0          1
0        [Albany County,  Wyoming]  [56, 001]
1      [Big Horn County,  Wyoming]  [56, 003]
2      [Campbell County,  Wyoming]  [56, 005]

提前感谢您的帮助！

Answer 1

All = [
    ['Albany County, Wyoming', '56', '001'],
    ['Big Horn County, Wyoming', '56', '003'],
    ['Campbell County, Wyoming', '56', '005']
]

pd.DataFrame(
    [line[0].split(', ') + line[1:] for line in All],
    columns=['COUNTY', 'STATE', 'FIPS1', 'FIPS2']
)

            COUNTY    STATE FIPS1 FIPS2
0    Albany County  Wyoming    56   001
1  Big Horn County  Wyoming    56   003
2  Campbell County  Wyoming    56   005

或者

df = pd.DataFrame(All, columns=['COUNTY, STATE', 'FIPS1', 'FIPS2'])

col = 'COUNTY, STATE'
df[col].str.extract(
    '(?P<COUNTY>.*), (?P<STATE>.*)', expand=True
).join(df.drop(col, 1))

            COUNTY    STATE FIPS1 FIPS2
0    Albany County  Wyoming    56   001
1  Big Horn County  Wyoming    56   003
2  Campbell County  Wyoming    56   005

Answer 2

你也可以试试这个：

lst = [['Albany County, Wyoming', '56', '001'],
 ['Big Horn County, Wyoming', '56', '003'],
 ['Campbell County, Wyoming', '56', '005']]

df = pd.DataFrame(lst)
df.columns = ['COUNTY_STATE', 'FIPS1', 'FIPS2']
print(df)
               COUNTY_STATE FIPS1 FIPS2
0    Albany County, Wyoming    56   001
1  Big Horn County, Wyoming    56   003
2  Campbell County, Wyoming    56   005

ALL = pd.DataFrame(df['COUNTY_STATE'].str.split(',').tolist(), columns = ['COUNTY','STATE'])
ALL[['FIPS1', 'FIPS2']] = df[['FIPS1', 'FIPS2']]
print(ALL)
            COUNTY     STATE FIPS1 FIPS2
0    Albany County   Wyoming    56   001
1  Big Horn County   Wyoming    56   003
2  Campbell County   Wyoming    56   005

获取列表列表，拆分列表，然后转换为数据帧

2 个答案: