= the User ' Shunya dream ' password = ' 123456 ' COUNT = 3 the while COUNT> 0: A = the INPUT ( ' Please enter your user name: ' ) b = the INPUT ( ' Please enter your password: ' ) IF A == the User and b == password: Print ( ' Congratulations on your successful login Please wait ...! ' ) Print ( '' ' % S, welcomes you enter python learning system Your password is% s '' ' % (The User, password)) # placeholder text input replacement BREAK # successful login, the loop exits the else : COUNT - = 1 # Each time input error, reduce the chance of a IF COUNT <1 : Print ( ' Sorry you have no chance to try!. ' ) BREAK # chance to run out exit loop Print ( ' note: you have ' + str (COUNT) + ' chance to try! ' ) # numeric type conversion
These are today learned in the learning process content