import getpass
from getpass import getpass
#library to get password in invisible chars

print " Welcome to CyberAcademy Bank "
print " To access your account please enter your credentials "
user = raw_input("Username :") # get the username
passwd = getpass("Password :") # get the password 

# authentication
# authenticating if the credentials are correct
if user == "Cyber" and passwd == "Academy":
    print "Welcome  Mr.{}".format(user)
    auth = "true"; # setting a variable to save the result of the authentication
else:
    print "Invalid credentials"
    auth = "false"; # capturing the result of a false authentication

balance = 1234.50; # default placeholder balance

if auth == "true": # checking if authentication was successful to move on
    print " Options Available :"
    print "[1] Account Status "
    print "[2] Deposit"
    print "[3] Withdraw"
    opt = raw_input()
else:
    pass # if authentication was not successful terminate

if opt == "1": # if option 1 display user info
    print "Account owner {}".format(user)
    print "Total amount  {}".format(balance)
elif opt == "2": #
    amnt=raw_input("Amount to deposit :") # get the amount to deposit from user
    total = balance + float(amnt) # geting the amount from the user and casting it to float and calculating the new balance
    balance =total # setting the new balance
    print "Total Available {}".format(total)
elif opt == "3":
    amnt = raw_input(" Amount to withdraw: ")
    status_a = balance - float(amnt) # getting the amount from the user to cast the amount to float
    if status_a < 0: # if the requested value is larger that the value available break operation
        print "The amount required is not possible"
    else:
        balance = balance - float(amnt) # calculate the new balance after withdrawl
        print " Amount left : {}".format(balance)
else:
    print "Option not available"