#!/usr/bin/env python3
import sys

#User class
class User:
    name = ""
    age = 0
    height = 0
    weight = 0
    
    def save(self, f):
        f.write(self.name + '\n')
        f.write(str(self.age) + '\n')
        f.write(str(self.height) + '\n')
        f.write(str(self.weight) + '\n')
        
    def loadFromFile(self, f):
    	self.name = f.readline().rstrip()
    	self.age = int(f.readline())
    	self.height = float(f.readline())
    	self.weight = int(f.readline())
    
    def loadFromInput(self):
        self.name = input('Enter User Name (Q to exit): ')
        
        if self.name == 'Q':
            return
        
        self.age = int(input('Enter Age: '))
        self.height = float(input('Enter Height (in feet): '))
        self.weight = int(input('Enter Weight: '))

    def display(self):
        print ''
        print 'User Information:'
        print 'User Name  :', self.name
        print 'User Age   :', self.age
        print 'User Height:', self.height
        print 'User Weight:', self.weight
        
#main program code
users = []

def createUsers():
	while 1:
	   u = User()
	   u.loadFromInput()
	   
	   if u.name == 'Q':
		   break
	
	   users.append(u)
	
def saveUsers():
	f = open('users.info', 'w')
	f.write(str(len(users)) + '\n')
	
	for u in users:
		u.save(f)
		
	f.close()    
	
def readUsers():
	f = open('users.info', 'r')
	num = int(f.readline())
	
	for i in range(num):
		u = User()
		u.loadFromFile(f)
		users.append(u)
		
	f.close()
	
def displayUsers():
	for u in users:
		u.display()
        
if len(sys.argv) > 1 and sys.argv[1] == 'READ':
    readUsers()
else:
    createUsers()
    saveUsers()
    
displayUsers()