拆分訂單數量舀

Question

有以下dataframes：

基於比例

**ASK** 
Date  Type Scoop Qty 
------------------------------- 
6-Oct-17 A  Single 80 
10-Oct-17 B  Triple 90 
9-Oct-17 D  Double 40 
10-Oct-17 C  Double 20 
10-Oct-17 B  Triple 90 
9-Oct-17 A  Single 30 

**ICECREAMTYPE** 
Type Scoop Flavour1 Flavour2 Flavour3 Scoops/Tub Proportion 
--------------------------------------------------------------------------- 
A  Single Strawberry         4  0.25 
C  Double Banana  Lemon       2  0.25 
B  Triple Vanilla  Lemon  Mint    3  0.11 
D  Double Chocolate Vanilla       5  0.10 

，尋找一條巨蟒邏輯，有助於detemine冰淇淋多少桶裏進行排序。所需

輸出是：

**ORDERTUBS** 
Date  Type Scoop  Flavour  Qty 
------------------------------------------------ 
6-Oct-17 A  Flavour1 Strawberry 20 
10-Oct-17 B  Flavour1 Vanilla  10 
10-Oct-17 B  Flavour2 Lemon  10 
10-Oct-17 B  Flavour3 Mint  10 
9-Oct-17 D  Flavour1 Chocolate 4 
9-Oct-17 D  Flavour2 Vanilla  4 
10-Oct-17 C  Flavour1 Banana  5 
10-Oct-17 C  Flavour2 Lemon  5 
10-Oct-17 B  Flavour1 Vanilla  10 
10-Oct-17 B  Flavour2 Lemon  10 
10-Oct-17 B  Flavour3 Mint  10 
9-Oct-17 A  Flavour1 Strawberry 7.5 

謝謝！

Answer 1

這是你想要的嗎？我打破完成步驟

import pandas as pd 
Target=df.merge(df1.drop('Scoop',1),on='Type',how='left') 
Target=Target.set_index(['Date','Type','Scoop','Qty','Scoops/Tub','Proportion']).stack().reset_index() 
Target['Qty']=Target['Qty']*Target['Proportion'] 
Target.drop(['Scoops/Tub','Proportion','Scoop'],1).rename(columns={'level_6':'Scoop',0:'Flavour'}) 

Out[49]: 
     Date Type Qty  Scoop  Flavour 
0 6-Oct-17 A 20.0 Flavour1 Strawberry 
1 10-Oct-17 B 9.9 Flavour1  Vanilla 
2 10-Oct-17 B 9.9 Flavour2  Lemon 
3 10-Oct-17 B 9.9 Flavour3  Mint 
4 9-Oct-17 D 4.0 Flavour1 Chocolate 
5 9-Oct-17 D 4.0 Flavour2  Vanilla 
6 10-Oct-17 C 5.0 Flavour1  Banana 
7 10-Oct-17 C 5.0 Flavour2  Lemon 
8 10-Oct-17 B 9.9 Flavour1  Vanilla 
9 10-Oct-17 B 9.9 Flavour2  Lemon 
10 10-Oct-17 B 9.9 Flavour3  Mint 
11 9-Oct-17 A 7.5 Flavour1 Strawberry 

---

數據輸入：

df 
Out[50]: 
     Date Type Scoop Qty 
0 6-Oct-17 A Single 80 
1 10-Oct-17 B Triple 90 
2 9-Oct-17 D Double 40 
3 10-Oct-17 C Double 20 
4 10-Oct-17 B Triple 90 
5 9-Oct-17 A Single 30 

df1 
Out[51]: 
    Type Scoop Flavour1 Flavour2 Flavour3 Scoops/Tub Proportion 
0 A Single Strawberry  NaN  NaN   4  0.25 
1 C Double  Banana Lemon  NaN   2  0.25 
2 B Triple  Vanilla Lemon  Mint   3  0.11 
3 D Double Chocolate Vanilla  NaN   5  0.10