Implementation of simple ATM with python

Environment: Python 2.7

can further improve

# -*- coding: utf-8-*-print u"+===================================================+"print u"+======================================== = "C:\Users\95112\Desktop\ATM\goods" #Define the location of the goods list salary = 0#Login def login(): global a global salary username=[] password=[] money =[] f = file(user_name) for line in f.readlines(): new_line = line.split() username.append(int(new_line[0])) password.append(int(new_line[1])) money.append(int(new_line[2])) UserName = int(raw_input("please input your username:")) if UserName in username: PassWord = int(raw_input("please input your password:")) username_passwd = password[username.index(UserName)] #Remove password corresponding to username salary = money[username.index(UserName)] #Remove money from your account if PassWord == username_passwd: a = 1 #Sign of successful login print "Login successful" print "You still have %s of the balance" % money else: a = 0 print "password error" else: a = 0 print "your username error" return a return salary#def shopping(): global salary products=[] price=[] shop_list= [] f = file(goods) for line in f.readlines(): new_line = line.split() products.append(new_line[0]) price.append(int(new_line[1])) while 1: print u'Please choose one or more of the following items to buy: print products for i in range(0,len(products)): if (salary>=price[i]): print products[i],price[i] print "+---------------------------------+" print u"Enter exit to exit the purchase" choice = raw_input("please choice a shop to buy:") F_choice = choice.strip()#Strips spaces and formats output. #exit loop if F_choice == "exit": break if F_choice in products: product_price = price[products.index(F_choice)] #Take out product price print "+---------------------------------+" print u"The item you want to buy and the price: ",F_choice,product_price print u"Item is being added to shopping list, please wait" if salary > product_price: shop_list.append(F_choice) salary = salary - product_price print "+---------------------------------+" print u"You have successfully purchased %s" % F_choice print u"Your balance is still: ", salary print u"The items you have purchased are: ", shop_list print "+---------------------------------+" else: pass else: print u"The product you entered is not in the product list, please re-enter! " def Transfer_accounts(): global salary print u"There is a 5% service charge for each transfer and withdrawal. " inputs = int(raw_input("please input you should how much money:")) SS = inputs*0.05 zong = inputs + SS if ( salary < zong or salary < inputs): print u"Insufficient balance" else: salary = salary - zong print "+------------------------------+" print u"successful transfer %s" % inputs print u"Deduct commission %s" % SS print "+------------------------------+" def check_the_balance(): global salary print "+---------------------------+" print u"You have %s" % salary print "+---------------------------+"#Menu def menu(): print u"""Welcome to use ATM automatic teller machine If the machine failure please contact ATM\t """ while True: print u"\t(1) Shopping" print u"\t(2) Transfer" print u"\t(3) Query Balance" print u"\t(4) Exit" choices = raw_input("Please choices:").strip() if len(choices) == 0: continue if choices == '1': shopping() elif choices == '2': Transfer_accounts() elif choices == '3': check_the_balance() else: print "Please pay attention to the property security" exit()if __name__ == '__main__': login() if a == 1: menu() else: pass

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