Python Error Implementing Custom Random Function

Hello everyone I tried implementing a custom random function I have worked on as a challenge. The program down below is a simple Pi finder that works well with the normal "random" library. I made some functions to try to achieve randomness with the use of the time module. It's random enough that I can say it works.

The problem I'm having is:

while counter<sayı:
    x = 2*random.random()-1 #a random long float
    y = 2*random.random()-1 

When I substitute the random.random() by my randrand() function, the shell does not give anything back. I am really thinking that I'm messing up with the while loop, as I somehow make it an infinite loop. Here is what I'm trying to turn it into:

while counter<sayı:
    x = 2*randrand()-1 
    y = 2*randrand()-1 

Here are some things you should know:

• Yes, there are easier alternatives.
• Yes, I am a beginner so don't go too hard on me.

• If there is an error with another part a solution to that would also be highly appreciated. (Don't think there are any as I tried debugging it quite a bit.)

  PS:Please disregard the comments as they are written in Turkish.

Here is the full file.

Pi finder

import time
import struct #bu yeni öğrendiğim bir sey

def rand(x):
    if x <= 0:
        return "Number should be above 0!"
    bLength = x.bit_length()
    a = randombits(bLength)
    while a >= x:
        a = randombits(bLength) #eger a x'ten buyukse buyuk olmayana kadar devam ediyor.
    return a

def lastbit(f):
    return struct.pack('!f', f)[-1] & 1 #bunu direk ctrl+c ctrl+v yaptım.

def randombits(x):
    r = 0
    for _ in range(x): #Bunu arka arkaya ayni sayi cikartmamak icin koydum.
        r <<= 1
        #tum bitleri bir yana kaydiriyor.
        #0111 olan 7 sayısı 1110 olan 14 sayısı oluyor orneğin.
        #sırf iki ile çarpmak işe yararmis gibi dursa da,
        #r = 0 iken bitleri bir yana kaydirmanin nedenini dusunuyorum.
        r |= lastbit(time.clock()) #bu yeni oğrendigim struct kullanan bir func.
        time.sleep (0.002)
    return r

def randint(a, b): #bu kısım daha kolaydi.
    x = a + rand(b-a+1)
    if x > b:
        randint(a,b) #alin hocam size recursive function. bence ben ap cs'e atlarim. xD
    return x

def randrand(): #bu yaptigim akillica degilse ne
    gg = "0."
    for i in range(12):
        a = randint(10,99)
        gg += str(a)
    return float(gg)

import random 
sayı = randint(50,500) #Bu sayı ne kadar artarsa Pi sayısına o kadar yaklaşıyor.
pInCircle = float(0)
counter=0 
while counter<sayı:
    x = 2*random.random()-1 #rastgele uzun bir float
    y = 2*random.random()-1 #tıpkısının aynısı

    if x**2 + y**2 < 1: #direk küçüktür koydum çünkü o iki sayının 
        pInCircle +=1 #toplamının 1 olma ihtimali virtually sıfır

    counter+=1

print (random.random()) #debug & testing
print (randrand()) #debug & testing
print (randrand()-1) #debug & testing
print ("Pi'nin değeri = " + str((4 * pInCircle/sayı)) + " (" + str(sayı) + " kere denendi.)")