I wrote this login program as part of my project for school. Should I use my implementation of a login program, or is there some standardized patterns of login programs, like the ones in encryption where we use made packages instead of writing our own?
Also, please correct me if am doing anything wrong or if there is a faster and more elegant way.
users = []
"""
Look of data.txt
john|mckinly|tree|ssap321
elie|rose|sweet|pass123
"""
def loadData():
with open('data.txt','r') as data:
for line in data:
user = makeUser(line)
users.append(user)
return True
def saveData():
with open('data.txt','w') as data:
for user in users:
print(user['name']+'|'+user['surname']+'|'+user['username']+'|'+user['password'],file = data)
def makeUser(line):
name, surname, username, password = line.split('|')
if password[-1:] == '\n':
password = password[:-1]
return {'name':name,
'surname':surname,
'username':username,
'password':password
}
def register():
name = input('Name:')
surname = input('Surname:')
while True:
username = input('Username:')
if checkLen(username):
break
while True:
password = input('Password:')
if checkLen(password):
break
users.append({'name':name,'surname':surname,'username':username,'password':password})
def checkLen(info):
if len(info) > 0:
return True
else:
print('Can\'t be blank!')
def login(state):
while state:
username = input('Username:')
password = input('Password:')
for user in users:
if user['username'] == username and user['password'] == password:
print('You are logged in.')
state = False
break
else:
print('Wrong input.')
def main():
state = loadData()
print('1) Login')
print('2) Register')
print('x - Exit')
choice = input('>')
while choice not in ['1','2','x']:
choice = input('>')
if choice == '1':
login(state)
elif choice == '2':
register()
main()
elif choice == 'x':
saveData()
quit()
if __name__ == '__main__':
main()
