finding indexes of 1's in a bit string and storing these indexes in a list — Index should be started from 1 not 0

I am finding indexes of 1's in a bit string successfully. However, these indexes start from 0.

Sample Data:

initial_pop
000000000000000000000000000001011000000
000000001000000000000001000000000010000
000000000000000000000000000000010011000
000000000000001001000000000000010000000
000000000000000000010000001000000010000
1000000000100000000010000000000000000000
1000000010000000000001000000000000000000
1001000000000000000010000000000000000000
000000000000100000000000100000000000010
000000000110000000000000000000001000000

Now, If we look at the 6th, 7th, and 8th data rows, values are placed at index 0 by default.

My sample code:

#Getting 1's index in a bit string
def intial_population(df_initial_pop):
    for ind in df_initial_pop['initial_pop'].index:
        msu_locations = indices(df_initial_pop['initial_pop'] [ind])
        initial_chromosomes_list.append(msu_locations)

#Calling function
intial_population(df_initial_pop)

Output: (print (initial_chromosomes_list))

[{32, 29, 31}, {8, 34, 23}, {34, 35, 31}, {17, 14, 31}, {26, 19, 34}, {0, 10, 20}, {0, 8, 21}, {0, 3, 20}, {24, 12, 37}, {32, 9, 10}]

As you can see in the above ouput, the index values are starting from 0.

Is it possible that I start my indexes from 1?

>Solution :

You are good there, just make an increment while iterating.

This should work:

return {i+1 for i,c in enumerate(chromosome) if c=='1'}