[Python] How do I use a custom mapping (sort) on my itertools for loop so that I can print...

I'm using python itertools specifically to generate combinations of integer strings. I have already created the loop that will loop through the combinations one at a time. I just need someone to help me input a custom mapping that will let me sort the combinations so that high priority strings will be printed first.

My code so far is:

from eth_keys import keys
from sympy import invert
from itertools import product, combinations
import itertools

def custom_mapping(combination):

return combination

def formula():

def first_func(P1_c, P2_c, p, k):


x1 = P1_c % k
y1 = P1_c // k
x2 = P2_c % k
y2 = P2_c // k

# Return combined number
return x1 + k * y2

def second_func(P_c, scalar, p, k,n):
"""Multiply a point represented as a combined number by a scalar using triple and add."""
result10 = first_func(P_c, scalar, p, k)

return result10


k = 2 ** 140
p = 9090
Gx = 1010
Gy = 2020
G_c = Gx + k * Gy

counter = itertools.count(start=1)

for scalar_v in counter:
combination = str(second_func(G_c, scalar_v, p, k, scalar_v)) # Calculate the public key


for comb in itertools.combinations(combination + str(scalar_v), len(combination + str(scalar_v))):
comb_string = ''.join(comb) # Join the characters to form a string

# Print or do something with each combination
print("Key:", comb_string)

formula()


In the custom_mapping function on top is where I want to use sorted() on my itertools combinations that will choose which combination I want and print it first. I'm not sure how this can be done and ChatGPT hasn't been much of a help.

Can someone show me how this is done? I want to sort the combinations so that certain strings will be printed first.

The type of sort I'm looking for is a character mapping like '0' : 1 and '1' : 0 so that certain strings with the characters 0 or 1 will come first or second.

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