如何通過在 Python 中添加 N 數乘以 M 倍等獲得所需的 output

Question

是否有一個庫來獲得所需的 output 例如n次m次

selection_from = {'a':30.2,'b':21,'c':2.1, 'd':73.2}
desired_output = 98372

#get input >> user can select from selection_form
user_selection = ['a', 'c']
# get something which satisfy this equation 
# m * selection_form['a']  + n * selection_form ['c'] <= desired_output 

結果應該接近所需的 output

Answer 1

簡單直接的答案是

selection_from = {'a':30.2,'b':21,'c':2.1, 'd':73.2}
desired_output = 98372
user_selection = ['a', 'c']
summ=0
for x in user_selection:
    summ+=  selection_from[x]  
m=n=desired_output/summ

output：

(m,n)=(3045.572755417957, 3045.572755417957)

!這是可能的解決方案，如果 m 和 n 可以是合理的，如果它們需要是整數，這將不是完美的解決方案