Python nested for loop - need help

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The output of my code is as follows:

The desired output is as follows:

I want the loop to go through all possible combinations. Any help here is much appreciated.

What I have tried:

var_a = ["1"]
var_b = ["4", "5"]
var_c = ["6", "7"]
var_d = ["8", "9"]

for x in var_a:
    for y in var_b:
        for z in var_c:
            for a in var_d:
                var_a=x 
                var_b=y
                var_c=z
                var_d=a
                print(var_a,var_b,var_c,var_d)

Posted 24-Apr-22 23:25pm

A v Nov2021

Updated 6-May-22 10:59am

Deeksha Shenoy

v2

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3 solutions

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Patrice T · Answer 1 · 2022-04-24T23:41:00

Try this

Python

var_a = ["1"]
var_b = ["4", "5"] # this variable
var_c = ["6", "7"]
var_d = ["8", "9"]

for x in var_a:
    for y in var_b:
        for z in var_c:
            for a in var_d:
                var_a=x 
                var_b=y # is destroyed  here
                var_c=z
                var_d=a
                print(var_a,var_b,var_c,var_d)
                print(x,y,z,a)

Richard MacCutchan · Answer 2 · 2022-04-24T23:32:00

Solution 1

You should use numeric loops rather than characters. You can then set range values for each one. When a variable reaches its limit you then start the next value to the left. The innermost loop will go from 8 to 9, the next from 6 to 7, etc.

Posted 24-Apr-22 23:32pm

Richard MacCutchan

ahmad arabi · Answer 3 · 2022-05-01T22:24:00

Solution 3

Why don't you break this into 3 functioning loops and then add them up. Honestly I didn't check the code but personally I preffer the method I just told.
It might take some time but the answer worth the time.

Posted 1-May-22 22:24pm

ahmad arabi