Random Password Generator 1: Edits 1 <Fixed>

import math
import random
alpha = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
print('Would you like a random password suggestion generator', 'Yes or No')    #Asks for parameters
permissionRandomGenerator = input().lower()

if permissionRandomGenerator == 'yes':    #Initiates password generator
    print('How long do you want your password?')
    lengthRandomGenerator = int(input())
    def randInt():
        return math.floor(random.random()*10)
    def randChar():
        return alpha[math.floor(random.random()*27) - 1]
    randPasswordList = []
    listInsert = 0
    def changeCase(f):
        g = round(random.random())
        if g == 0:
            return f.lower()
        elif g == 1:
            return f.upper()
    while listInsert < lengthRandomGenerator + 1:
        randPasswordList.insert(listInsert, randInt())
        listInsert = listInsert + 1
        if listInsert >= lengthRandomGenerator + 1:
            break
        randPasswordList.insert(listInsert, randChar())
        randPasswordList[listInsert] = changeCase(randPasswordList[listInsert])
        listInsert = listInsert + 1
        continue
    listInsert = 0
    printList = 0
    if lengthRandomGenerator <= 0:
        print('It has to be longer than that')
#    elif lengthRandomGenerator >= 25:
        print('I can\'t generate a password that long')
    elif math.isnan(lengthRandomGenerator):
        print('error: not valid data type')
    else:
        while printList < (len(randPasswordList)-1):
            printItem = randPasswordList[printList]
            print(printItem)
            printList = printList + 1
    printList = 0
    randPasswordList = []
elif permissionRandomGenerator == 'no':
    print('Too bad...')
else:
    print('You had to answer Yes or No')