print('--------------')
print('Security check')
print('--------------')

user = input('Who is using this right now? ')
if user == 'Hugo':
    realpassword = 'a**2+b**2=c**2'
    chock = 0
    while chock == 0:
        password = input('Enter password: ')
        if password == realpassword:
            chock = 1
            print('Welcome, Hugo!')
        else:
            chock = 0


else:
    print('User not recognised.')
    check = 0
    while check == 0:
        realpassword_nonHugo = input('Please enter new password: ')
        checking = input('Are you sure? ')
        if checking == 'Yes':
            check = 1
            print('Welcome, ', user + '!')
        else:
            check = 0