def loopy_madness_with_while_loops(string1: str, string2: str) -> str: """ Given two strings and , return a new string that contains letters from these two strings "interwoven" together, starting with the first character of . If the two strings are not of equal length, then start looping "backwards-and-forwards" in the shorter string until you come to the end of the longer string. "interwoven" (or "interweaving") means constructing a new string by taking the first letter from the first string, adding the first letter of the second string, adding the second letter of the first string, adding the second letter of the second string, and so on. "backwards-and-forwards" is a custom looping term. First the loop starts at position 1 (index 0) and goes until position n (i.e., the end). Once the loop reaches position n, it goes backwards, starting at position n - 1 and goes to position 1 (index 0). This repeats until the two strings are interwoven. For example, the backwards-and-forwards operations of "abc" would be "abcbabcba..." >>> loopy_madness_with_while_loops("abcde","12") 'a1b2c1d2e1' >>> loopy_madness_with_while_loops("ab","123") 'a1b2a3' >>> loopy_madness_with_while_loops("abcdfe","123") 'a1b2c3d2f1e2' >>> loopy_madness_with_while_loops("a","b") 'ab' >>> loopy_madness_with_while_loops("c","ab") 'cacb' """

def loopy_madness_with_while_loops(string1: str, string2: str) -> str:
"""
Given two strings <string1> and <string2>, return a new string that
contains letters from these two strings "interwoven" together, starting with
the first character of <string1>. If the two strings are not of equal
length, then start looping "backwards-and-forwards" in the shorter string
until you come to the end of the longer string.

"interwoven" (or "interweaving") means constructing a new string by taking
the first letter from the first string, adding the first letter of the
second string, adding the second letter of the first string,
adding the second letter of the second string, and so on.

"backwards-and-forwards" is a custom looping term. First the loop starts
at position 1 (index 0) and goes until position n (i.e., the end). Once the
loop reaches position n, it goes backwards, starting at position n - 1 and
goes to position 1 (index 0). This repeats until the two strings are
interwoven. For example, the backwards-and-forwards operations of "abc"
would be "abcbabcba..."

>>> loopy_madness_with_while_loops("abcde","12")
'a1b2c1d2e1'
>>> loopy_madness_with_while_loops("ab","123")
'a1b2a3'
>>> loopy_madness_with_while_loops("abcdfe","123")
'a1b2c3d2f1e2'
>>> loopy_madness_with_while_loops("a","b")
'ab'
>>> loopy_madness_with_while_loops("c","ab")
'cacb'

"""

Please do this on python, use while loop and don't use any import, dictionaries, or try-except statement.