私はあなたが最初に変形用にgroupby
+ size
+ unstack
またはcrosstab
が必要だと思います。その後
必要なアドオンがreindex_axis
と最後add_prefix
によってweekday
秒欠けている場合:
サンプル:
df = pd.DataFrame({'subscription_id':[1,2,3,1], 'delivery_weekday':[1,1,2,1]})
print (df)
delivery_weekday subscription_id
0 1 1
1 1 2
2 2 3
3 1 1
df = df.groupby(['subscription_id','delivery_weekday']) \
.size() \
.unstack(fill_value=0) \
.reindex_axis(range(1,8), fill_value=0, axis=1) \
.add_prefix('delivery_day_')
print (df)
delivery_weekday delivery_day_1 delivery_day_2 delivery_day_3 \
subscription_id
1 2 0 0
2 1 0 0
3 0 1 0
delivery_weekday delivery_day_4 delivery_day_5 delivery_day_6 \
subscription_id
1 0 0 0
2 0 0 0
3 0 0 0
delivery_weekday delivery_day_7
subscription_id
1 0
2 0
3 0
df = pd.crosstab(df['subscription_id'],df['delivery_weekday']) \
.reindex_axis(range(1,8), fill_value=0, axis=1) \
.add_prefix('delivery_day_')
print (df)
delivery_weekday delivery_day_1 delivery_day_2 delivery_day_3 \
subscription_id
1 2 0 0
2 1 0 0
3 0 1 0
delivery_weekday delivery_day_4 delivery_day_5 delivery_day_6 \
subscription_id
1 0 0 0
2 0 0 0
3 0 0 0
delivery_weekday delivery_day_7
subscription_id
1 0
2 0
3 0
を