我正在尝试使用Python重新创建一个VBA宏。有人可以告诉我我应该使用的FOR语句,以便获得以下结果吗?非常感谢。
文件1:
Product Colour Price
Book NaN 5
Table NaN 10
Chair NaN 7
文件2:
Colour
Blue
Red
Green
循环后的预期结果(文件1):
Product Colour Price
Book Blue 5
Table Blue 10
Chair Blue 7
Book Red 5
Table Red 10
Chair Red 7
Book Green 5
Table Green 10
Chair Green 7
答案 0 :(得分:1)
首先将df1
的值重复df2
,然后将list comprehesion
的{{1}}和chain
用作:
Colour
答案 1 :(得分:0)
您可以使用列表推导,类似于嵌套的for
循环:
df = pd.DataFrame([[product, colour, price] for colour in df2['Colour'] \
for product, price in zip(df1['Product'], df1['Price'])],
columns=['Product', 'Colour', 'Price'])
print(df)
Product Colour Price
0 Book Blue 5
1 Table Blue 10
2 Chair Blue 7
3 Book Red 5
4 Table Red 10
5 Chair Red 7
6 Book Green 5
7 Table Green 10
8 Chair Green 7