#1. Authentication
authUsers=[]
f=open("authUsers.txt","r")

for line in f:
    line=line.strip("\n")
    authUsers.append(line.split())

username=input("Enter your username: ")#asks user for username
found=False#found is false
aUlength=len(authUsers)#length of list

while i<aUlength and found == False:
    if username == authUsers[i][0]:
        found==True
    else:
        i+=1
if i==aUlength and found == False:
    auth=False
    print("Access Denied")
password=input("Enter your password: ")
if password == authUsers[i][1]:
    auth=True
    print("Access Granted")
else:
    auth=False
    print("Access Denied")