Clock complete manual setup

import time

import subprocess as sp


    h=int(input('Enter Hours - '))
    m=int(input('Enter Minutes -'))
    s=int(input('Enter Seconds - '))





sp.call('clear',shell=True)
#sp.call('cls',shell=True)
while True:
    print(h,':',m,':',s,)
    time.sleep(0.95)
    sp.call('clear',shell=True)
    #sp.call('cls',shell=True)

    if s<59:
        s=s+1
    else :
        s=0

        if m<59:
            m=m+1
        else:
            m=0

            if h<24:
                h=h+1
            else:
                h=1