Calculating How Many Random String Until Everything is Mentioned in Python

calcstring.py

import random

stringAlphabets = "abcdefghijklmnopqrstuvwxyz"
stringAvail = []
strAvlength = 0
strLimlength = 0
strErrs = 0

charLength = 15 # Any length of chars

limitDone = True

while(limitDone):
  stringRand = "".join(random.choice(stringAlphabets) for _ in range(charLength))
  print("Live Count of String Avail: " + str(strAvlength) + " String: " + stringRand + ", Errors: " + str(strErrs), end="\r")
  if stringRand not in stringAvail:
    strAvlength = strAvlength + 1
    strLimlength = 0
    stringAvail.append(stringRand)
  else:
    strErrs = strErrs + 1
    strLimlength = strLimlength + 1
    if strLimlength == 10000:
      print("\nFinished calculating!")
      limitDone = False