A simple hased password check script to demonstrate how servers check password when we enter it during log in.

Password_Verification.py

import hashlib

print("# This is a demo on how servers checks your password when you enter it during login\n")
pass_in0 = input(">> Enter Your Demo Password\n")

hash_generate = hashlib.sha1(pass_in0.encode())
hex_gen0 = hash_generate.hexdigest()
print(">> Your Stored Hash is: "+ str(hex_gen0))
print("# This is stored in server when you signup for first time")

pass_in1 = input("\n>> Enter Demo Password Again To Varify\n")

hash_check = hashlib.sha1(pass_in1.encode())
hex_gen1 = hash_check.hexdigest()
print(">> Your Calculated Hash is: "+ str(hex_gen1))
print("# This is calculated at the time you login")

if (hex_gen0 == hex_gen1):
    print ("\n[✔] Hashes Matched !")
    print ("[✔] Password Verified !")
else:
    print ("\n[✘] Hashes Didn't Matched !")
    print ("[✘] Verification Failed !")