realUsername = "jim59" 
userUsername = input( "Username: " )

realPassword = "bananas"
userPassword = input( "Password: " )

if userUsername == realUsername :

    if userPassword == realPassword :
        print( "Welcome!" )

    else: 
        print( "Sorry but your password is incorrect" )

else:
    print( "Sorry, but your username is  not recognised" )