binary and sequential search

import random
import time
numbers=[]
x=0
y=50

for num in range(16):
    start = time.time()
    temp = random.randint(x,y)
    numbers.append(temp)
    x+=50
    y+=50
    end = time.time()

print(numbers)

print(len(numbers))


def binarySearch():
    result = -1
    first=0
    last=len(numbers)
    count=0
    wanted=int(input("Enter your wanted value"))
    while (first <= last and result==-1):
        count+=1
        mid = int((first+last)/2)
        if (wanted == numbers[mid]):
            result=mid
            print("found!!")
        else:
            if (wanted<numbers[mid]):
                last = mid - 1

            else:
                first = mid+1
    end = time.time()
    print("item found at index position",result," Time:",end-start,"count ",count)
    result = -1
    first=0
    last=len(numbers)
    count=0

def sequentialSearch():
    count=0
    wanted=int(input("Enter your wanted value"))
    start = time.time()
    for x in range (len(numbers)):
        if numbers[x]==wanted:
            end = time.time()
            print("item found at index position",numbers[x]," Time:",end-start,"count ",count)
            break
        else:
            count+=1

while (True):
    choice=input("A: Sequential Search or B: Binary search?")
    if choice =="A":
        sequentialSearch()
    elif choice =="B":
        binarySearch()
    else:
        break