Join element between each item of a list – python

I want to join an element in this case it’s "*" between each element of the list but not at the first position and not in the last position

How can I do this ?

Code :

import math
def decompose(n:int):
    
    factors = []
    
    
    if n < 2:
        return False
    
    for d in range(2, int(math.sqrt(n)) +1):
        
        if n % d == 0:
            factors.append(d)
            print(factors)
            
    factors = str(factors)
    
            
    print(f"The decomposition of {number5} in prime factor is" + '*'.join(str(factors)))       
    return True
    
number5 = int(input('Chose a number:'))


print(decompose(number5))

it prints this :

Decomposition of 45 in prime factor is [*3*,* *5*]

But that’s not what I want, I want numbers without commas and without the * in first and last position

>Solution :

This way:

def decompose(n: int):
    factors = []

    if n < 2:
        return False

    d = 2
    while d <= n:
        while n % d == 0:
            factors.append(str(d))
            n //= d
        d += 1
    if n > 1:
        factors.append(str(n))

    print(f"The decomposition of {number5} in prime factor is " + '*'.join(factors))
    return True


number5 = int(input('Chose a number:'))

print(decompose(number5))

What I’ve changed:

• The algorithm of factorization. Now it counts multiple multipliers.
• factors now is a List[str], so join could be performed easily.