When it is required to get ‘K’ length groups with a given summation, an empty list, the ‘product’ method, the ‘sum’ method and the ‘append’ method can be used.
Example
Below is a demonstration of the same
from itertools import product
my_list = [45, 32, 67, 11, 88, 90, 87, 33, 45, 32]
print("The list is : ")
print(my_list)
N = 77
print("The value of N is ")
print(N)
K = 2
print("The value of K is ")
print(K)
my_result = []
for sub in product(my_list, repeat = K):
if sum(sub) == N:
my_result.append(sub)
print("The result is : " )
print(my_result)Output
The list is : [45, 32, 67, 11, 88, 90, 87, 33, 45, 32] The value of N is 77 The value of K is 2 The result is : [(45, 32), (45, 32), (32, 45), (32, 45), (45, 32), (45, 32), (32, 45), (32, 45)]
Explanation
The required packages are imported into the environment.
A list is defined and is displayed on the console.
A value for N and K is defined and is displayed on the console.
An empty list is defined.
The product of elements in the list is determined, and it is checked to see if it is equivalent to N.
If yes, this is appended to the empty list.
This is displayed as output on the console.