# Genetic Algorithms in Python - Help me, please

I’m having trouble figuring out how to have this code repeat. The code is for a beginning genetic algorithm function on which I am working on. I’m an extreme amateur with code, so if it’s something stupid, sorry

I think I’m close, I have three variants of code both of which are not quite there, but are relatively close (…maybe…).

Here is var_1 of my code:

``````population_size = int(raw_input('Enter a population size:'))

def make_organism(length):
from random import randint
length = int(raw_input('Enter an organism length:'))
org = []
for i in range(length):
var = randint(0, 1)
org.append(var)
new_org = []

for length in range(population_size):
var_2 = randint(0, 1)
new_org.append(var_2)
print new_org
This code returns the correct population but not the correct length.
``````

Ex:

Enter a population size: 3

Enter an organism length: 4

[0]

[0, 0]

[0, 0, 0]

Var_2 of my code:

``````population_size = int(raw_input('Enter a population size:'))

def make_organism(length):
from random import randint
length = int(raw_input('Enter an organism length:'))
org = []
for i in range(length):
var = randint(0, 1)
org.append(var)
new_org = []

for length in range(population_size):
var = randint(0, 1)
org.append(length)
print new_org
``````

This code returns the correct population but does not return anything in the brackets. Prints new_org as many times as the population_size is.

Ex:

Enter a population size: 3

Enter an organism length: 4

Var_3:

``````population_size = int(raw_input('Enter a population size:'))

def make_organism(length):
from random import randint
length = int(raw_input('Enter an organism length:'))
org = []
for i in range(length):
var = randint(0, 1)
org.append(var)
print org
This code will return the correct length with code but not the correct population size.
``````

Ex:

Enter a population size: 3

Enter an organism length: 4

[0, 1, 0, 1]

‘orgs’ are organisms represented as empty lists. The code generates a random number pattern of 0’s and 1’s according to bit length, and should return as many random lists as the user inputs population size.