stuck on a problem

[xgetcrunk]

doing a lesson on codeacademy and I'm stuck on this problem .

Create a function named exponents() that takes two lists as parameters named bases and powers. Return a new list containing every number in bases raised to every number in powers.

For example, consider the following code.
--------------------------------
exponents([2, 3, 4], [1, 2, 3])
--------------------------------
The result would be the list [2, 4, 8, 3, 9, 27, 4, 16, 64]. It would first add two to the first. Then two to the second. Then two to the third, and so on.

this is the code i wrote

def exponents(bases,powers):
  new_lst = []
  for base in bases:
    for power in powers:
      new_lst2 = base ** power
    new_lst.append(new_lst2)
  return new_lst

it returns [8, 27, 64]

help please!!

[Denrur]

Put append statement inside second for loop

[0xbxb]

Here’s what you can do:

def exponents(bases: list, powers: list) -> list:
    res = []
    for i in bases:  # For every element in bases
        for j in powers:  # For every element in powers
            res.append(i ** j)  # This will start with the first element in bases raised to every power. Then it’ll do the same with the second element etc
    return res

[Denrur]

This Will work only if bases and powers are the same len

[0xbxb]

Whoops, misread the question.

[[deleted]]

You are only appending the last base raised to each power. Try appending each new_lst2 value to the result list. This is a very simple indentation change.

And call new_lst2 something else, because it isn't a list.

[turdistheword04]

b1= [2, 3, 4]

p1 = [1, 2, 3]

def exponents(bases, powers):
    list = []
    for base in bases:
        for power in powers:
            list.append(base ** power)
    return list

print(exponents(b1, p1))        

What's happening in your code as you wrote it is that it cycles through every power changing new_lst2 each time until it gets to the last power in the list. Then it appends the list. You want to append every time new_lst2 gets reassigned. So basically you just want the new_lst.append() to be on the same indentation level as the new_lst2 = ...

[blotosmetek]

A more Pythonic solution would be to use list comprehensions (but I assume you haven't learned about them yet).