September 2023
Intermediate to advanced
424 pages
13h 21m
Japanese
Content preview from Pythonデータ分析 実践ハンドブック 実務で使えるデータ加工のテクニック
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131
3
align()
align()
DataFrame
DataFrame
DataFrame
level
align1, align2 = df.align(group_by_mean, level="
")
align1
学年 学級
国語 数学
1
年
A
組
31 8
1
年
B
組
86 2
1
年
C
組
42 86
2
年
A
組
27 75
2
年
B
組
82 83
2
年
C
組
25 53
3
年
A
組
40 81
3
年
B
組
64 32
3
年
C
組
54 45
align2
学年 学級
国語 数学
1
年
A
組
53.000000 32.000000
1
年
B
組
53.000000 32.000000
1
年
C
組
53.000000 32.000000
2
年
A
組
44.666667 70.333333
2
年
B
組
44.666667 70.333333
2
年
C
組
44.666667 70.333333
3
年
A
組
52.666667 52.666667
3
年
B
組
52.666667 52.666667
3
年
C
組
52.666667 52.666667
3-5-4
MultiIndexの階層の変更
swaplevel()
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