Develop Reference

why closes my python program without fully executing?

I am completely new to programming and started a few days ago with learning Python(v.3.8.8). I wanted to make a small password manager, but with a little secret function(I think that's not important and it would take too much time to describe). Anyways I converted the main.py to a .exe with auto-py-to-exe but every time I wanna execute the .exe I can only enter my Login data and the window instantly closes but in Pycharm everything works totally fine. Does anyone know why?
EDIT: It works now, there was no missing "Input()" or stuff like that, I had a spelling mistake in my code and pycharm ignored it!
from cryptography.fernet import Fernet
welcome = input("Login(1), New User (2): ")
def new_user(): # creates a new user and safe the Username and pw in a .txt
print("The login is just for the safety of your data, everything is stored on your local PC!")
username = input("Enter a username:")
password = input("Enter a password:")
password1 = input("Confirm password:")
if password == password1:
key = Fernet.generate_key()
f = Fernet(key)
f.encypt(b'password')
file = open(username + ".txt", "w")
file.write(username + ":" + password)
#file.close()
login() # go to login after everything is safed in the .txt
else:
print("Passwords do NOT match!")
def login(): # checks if the entered username and pw match with the .txt content
login1 = input("Login:")
login2 = input("Password:")
file = open(login1 + ".txt", "r")
pw = file.readline()
#file.close()
if pw == login1 + ":" + login2: # infinte trys to enter the username and pw
print("Welcome " + login1)
pwrequest()
else: # returns to login() if the pw is incorrect
print("Incorrect username or password. Please try again")
login()
def pwrequest():
q = input("safe new Password(1), show safed passwords(2)")
if q == "2":
data() # show all saved pw
if q == "1":
newdata() # go to data() if the user want to add a new pw or
# want to acces the hidden part
def data():
file = open('1.txt', 'r') # prints all saved passwords
file_pw = file.read()
print(file_pw)
file.close()
c = input("Press (1) to delete something and press (2) to log out.")
if c == '1':
delete() # delete a pw or acces to hidden part
if c == '2':
login() # simple logout system, probably have to change this to something more intermediate
def newdata(): # safes the data in variables and put it in a .txt file
company = input("Enter the companys name: ")
username = input("Enter your username: ")
password = input("Enter your password: ")
print(company + username + password + ", is everything correct?")
a = input("y/n")
if a == "y":
file = open("1.txt", "w")
file.write(
"Company: " + company + "\n" + "Username: " + username + "\n" + "Password: " + password + "\n" + "\n")
file.close()
pwrequest() # return to pwrequest()
if a == "n":
newdata() # return to newdata() if something is incorrect
secretWord = "CompanyUsernamePassword" # define the secret word to finaly acces the hidden part
if company + username + password == secretWord:
secrettest() # go to secrettest() to enter the secret word
def delete(): # just simple code that delete specific content of the pw .txt
name = input("Please enter the Company, Username and password you wanna delete: ")
with open("1.txt", "r") as f:
lines = f.readlines()
with open("1.txt", "w") as f:
for line in lines:
if line.strip("\n") != name:
f.write(line)
def secrettest():
key = Fernet.generate_key()
f = Fernet(key)
truepass = f.encrypt(b"Test1234")
trys = 3
while trys != 0: # checks if you entered the correct pw and if not count 2 times
password = input("Pls enter the password: ")
d = f.decrypt(truepass)
if password == d.decode():
print(truepass)
break
else:
print("Wrong password!")
trys -= 1
if trys == 0:
print("You entered the wrong password to many times!")
if welcome == "1": # should probably try to move that to the top
login()
if welcome == "2": # this too
new_user()

I think I know why the .exe always closes. I executed the .exe in the windows cmd, and got this error "AttributeError: 'Fernet' object has no attribute 'enrcypt'". I'm kinda sure that this is the part that caused the trouble. I'm just wondering why pycharm just ignored this error...

Python login limit

i'm trying to implement login attempt system to my current code, but i don't know where i should tick it. Can someone suggest anything? I would like to give three attempts to login, if user fails to login, system will lock user out. I just dont know where to position the code properly.
granted = False
def grant():
global granted
granted = True
def login(name,password):
success = False
file = open("user_details.txt","r")
for i in file:
a,b = i.split(",")
b = b.strip()
if(a==name and b==password):
success=True
break
file.close()
if(success):
print("Login Succesful")
grant()
else:
print("wrong username or password")

The better way to do this problem is by having a JSON file instead of a txt file. You can have the file in this format:
{
"username": {
"password": "",
"attempts": 0,
}
}
In the login() function increment and write the count of attempts if the password is wrong.
And before the function begins read the JSON and check if the attempts value is greater than 3. If it is greater send an appropriate message else to continue the login action and ask for the password.
Your code had some minor errors which I have handled here:
import re
granted = False
def grant():
global granted
granted = True
def login(name,password):
success = False
file = open("user_details.txt","r")
for i in file:
if i.count(',') > 0: # check whether i has at least one ','
a,b = i.split(",")
b = b.strip()
if(a==name and b==password):
success=True
break
file.close()
if(success):
print("Login Succesful")
grant()
else:
print("wrong username or password")
def register(name,password):
file = open("user_details.txt","a")
file.write( "\n"+name[0]+","+password) # name is an array so only the first element is stored.
file.close()
grant()
def access(option):
global name
if(option=="login"):
name = input("Enter your name: ")
password = input("enter your password: ")
login(name,password)
else:
print("Enter yor name and password to register")
name = input("Please enter your name: ").lower().split()
if len(name) > 1:
first_letter = name[0][0]
three_letters_surname = name[-1][:3].rjust(3, 'x')
name = '{}{}'.format(first_letter, three_letters_surname)
print(name)
while True:
password = input("Enter a password: ")
if len(password) < 8:
print("Make sure your password is at lest 8 letters")
elif re.search('[0-9]',password) is None:
print("Make sure your password has a number in it")
elif re.search('[A-Z]',password) is None:
print("Make sure your password has a capital letter in it")
else:
print("Your password seems fine")
break
register (name,password)
def begin():
global option
print("Welcome to Main Menu")
option = input("Login or Register (login,reg): ")
if(option!="login" and option!="reg"):
begin()
begin()
access(option)
if(granted):
print("Welcome to main hub")
print("#### Details ###")
print("Username:",name)

Python login verification system

This is a login system where the user types in their details and then this code verifies if the user exists
counter = 0
def validation():
global counter
print("Sorry, this username or password does not exist please try again")
counter += 1
if counter == 3:
print("----------------------------------------------------")
print("You have been locked out please restart to try again")
sys.exit()
def verify_login(username, password, login_data):
for line in login_data:
if ("username: " + username + " password: " + password) == line.strip():
return True
return False
check_failed = True
while check_failed:
with open("accountfile.txt","r") as username_finder:
print("Could player 1 enter their username and password")
username1=input("Please enter your username ")
password1=input("Please enter your password ")
if verify_login(username1, password1, username_finder):
print("you are logged in")
Right now the code looks in the text file for this format:
username: (username) password: (password)
But now I want to add a hash code for every user so the format in the file looks like this:
49ad2322f9a401e9e3c4ae7694b6b1f1 username: (username) password: (password)
How would I change the verfiy_login to make it look for a random 32
characters at the beginning of every user?

Instead of reconstructing the line using "username: " + username + " password: " + password then comparing it to the line from the text file, you can parse it by first splitting the string then unpacking the tokens. By splitting the line, you get access to the hash, username, and password individually as variables.
def verify_login(username, password, login_data):
for line in login_data:
hsh, _, username_from_file, _, password_from_file = line.strip().split()
if len(hsh) == 32 and username == username_from_file and password == password_from_file:
return True
return False
Unpacking a token into _ is a convention saying that "we will dump this value".

How do I loop my password/username login page and read the password/username from an external file?

I'm aware of the multiple posts and sources regarding how to loop and read from a text file. I'm sorry to be that guy but I'm a recent noob at Python and I'm writing this at 1:00 in the morning.
As the title suggests, how do I loop my login page so that if the user enters details incorrectly then they get another chance to try, until they have entered details correctly. The password/username also needs to be read from an external file.
My code:
print ("\nEnter details to access wallet...\n")
username = 'Janupedia'
password = '12345'
userInput = input("What is your username?\n")
if userInput == username:
userInput = input("Password?\n")
if userInput == password:
print("Welcome!")
print('\n--------------------------------------------------------\n')
print ("BTN = 0.10")
print ("= £315.37")
else:
print("That is the wrong password.")
else:
print("That is the wrong username.")
print('\n--------------------------------------------------------\n')

Let's say your text file (credentials.txt) reads:
Janupedia
12345
Maybe something like this will work for you. I've commented the code that I added. You probably want to name the credentials file something else.
print ("\nEnter details to access wallet...\n")
"""
Open File
"""
with open("Credentials.txt", "r") as f:
array = []
for line in f:
array.append(line) #stores username and password
username = array[0]
password = array[1]
login = 0 #initial login status
while login == 0: #as long as login status = 0 loop repeats
userInput = input("Username?")
if username.strip(' \n') == userInput.strip(' \n'):
userInput = input("Password?")
if password.strip(' \n') == userInput.strip(' \n'):
login = 1 #login successful set login status to 1 thus breaking loop
else:
print("Incorrect")
else:
print("Incorrect")
print('\n--------------------------------------------------------\n')
# Login successful loop finished
print("Welcome!")
print('\n--------------------------------------------------------\n')
print ("BTN = 0.10")
print ("= 315.37")

So you want to loop it. Where would a good place for that be? How about when we ask for a question.
Now, look at the condition where we get the right username and password. We don't want to handle it inside the loop. The loop is only there to get the correct username and password.
print("\nEnter details to access wallet...\n")
username = "Janupedia"
password = "12345"
userInput = ""
while userInput != password:
userInput = input("What is your username?\n")
if userInput == username:
userInput = input("Password?\n")
if userInput == password:
break
else:
print("That is the wrong password.")
else:
print("That is the wrong username.")
print("Welcome!")
print("\n--------------------------------------------------------\n")
print("BTN = 0.10")
print("= £315.37")
todo_list = open("Credentials", "a")
todo_list.write("Username = Janupedia + Password = 12345")
todo_list.close()
print("\n--------------------------------------------------------\n")
Now to read your username/password from a file. Let's make it simple. The first line is the username and the second line is the password. There are no other items.
Now create a proper function.
def read_credentials_from_file(filename):
"""Read the file and return (username, password).
File contents are first line username and second line password.
"""
# Using the `with` statement is current best practice.
with open(filepath, "rt") as user:
username = user.readline().strip()
password = user.readline().strip()
return username, password
Now fix your code to use the function.
username, password = read_credentials_from_file(...)
Note in the function we strip line endings. If you are using Python 3.7, use the breakpoint function to step through the code and watch what it is doing.

do something like this:
password = "password"
username = "username"
theirUsername = input("What is your username")
theirPassword = input("What is your password")
while theirUsername != username or theirPassword != password:
print("incorrect")
theirUsername = input("What is your username")
theirPassword = input("What is your password")
print("correct")
You can read from an external file with file = open("externalfile.txt","r") then do text = file.read() and if the file is formatted as
username
password
do text = text.split("\n") and then username = text[0] and password = text[1]
this is what it should look like with an explanation:
file = open("password.txt","r") #this opens the file and saves it to the variable file
text = file.read() #this reads what is in the file and saves it to the variable text
text = text.split("\n") #this makes the text into a list by splitting it at every enter
username = text[0] #this sets the username variable to the first item in the list (the first line in the file). Note that python starts counting at 0
password = text[1] #this sets the password variable to the second item in the list (the second line in the file)
theirUsername = input("What is your username") #gets username input
theirPassword = input("What is your password") #get password input
while theirUsername != username or theirPassword != password: #repeats the code inside while theirUsername is not equeal to username or theirPassword is not equal to password
print("incorrect") #notifies them of being wrong
theirUsername = input("What is your username") #gets new username input
theirPassword = input("What is your password") #gets new password input
print("correct") #tells them they are corrected after the looping is done and the password and username are correct

Verify Username and Password Input in Python

I need to make a program where I once input username and password, It will verify the input by asking for my username and password again and making me repeat it if it doesn't match. I am stuck on the code below and have no idea how to fix it. Help!
import time
complete = False
user = [["username",""],["password",""]]
def Access():
for n in range (len(user)):
user[n][1] = input(user[n][0])
while not complete:
Access()
username = input("What is the username?")
password = input("What is the password?")
if username == user[n][0]:
print("Good!")
else:
print("Input username again!")
if password == user[n][1]:
print("User has been identified, Welcome",username)
else:
print("Input password again")

Your user isn't stored in the best way possible, try using a dict instead. You can try something like this instead: (fixed some mistakes and made improvements )
# I believe this is what you're trying to do
complete = False
user = {"some username" : "some password", "more username" : "more password"}
while not complete:
username = input("What is the username?")
password = input("What is the password?")
conf_username = input("Repeat the username?")
conf_password = input("Repeat the password?")
# since in your question you said you wanted to ask the user to repeat
if username != conf_username or password != conf_password:
print("username or password does not match") # print a message if different inputs
continue # restarts
if not username in user: # check to see if user does not exists
print("Input username again!")
continue
if password == user[username]: # check to see if password match
print("User has been identified, Welcome",username)
complete = True
else:
print("Input password again")

n is only defined in the Access() function, in your while loop, the program won't know what n is.
in the while section, try if username == user[0][0] and if password == user[1][1]

The code should be like this,n is not defined in while loop:
if username == user[0][0]:
print("Good!")
else:
print("Input username again!")
if password == user[1][1]:
print("User has been identified, Welcome", username)
complete = True
By the way,I suggest you use dictionary structure:
user_pass = {}
while True:
user = input("Your name")
pwd = input("Your password")
if user in user_pass and pwd == user_pass[user]:
print("Welcome", user)
break
else:
user_pass[user]=pwd
print("registration completed,please login")

You are in an infinite while loop because complete is never set to true. Futher you want to match the user name and then password. I made it so you can have a database with names and passwords and compare it with the new input. You can of course also use it with just one username and password. Hope it gives some ideas.
import time
complete = False
user = [["username","password"],["username2","password2"]]
while not complete:
username = input("What is the username?")
password = input("What is the password?")
for n in len(user):
if username == user[n][0]:
print("Good!")
if password == user[n][1]:
print("User has been identified, Welcome",username)
complete = True
else:
break
print("Input password again")
if not complete:
print("Input username again!")

https://github.com/soumilshah1995/UserName-and-Password-Validation-Python
#!/usr/bin/env python3
__author__ = "Soumil Nitin Shah"
__copyright__ = "Copyright 2007, The Cogent Project"
__credits__ = ["Rob Knight"]
__license__ = "GPL"
__version__ = "1.0.1"
__maintainer__ = "Soumilshah"
__email__ = "soushah#my.bridgeport.edu"
__status__ = "Testing"
from flask_bcrypt import Bcrypt
class Authentication(object):
def __init__(self, username = ''):
self.username = username
def __lower(self):
lower = any(c.islower() for c in self.username)
return lower
def __upper(self):
upper = any(c.isupper() for c in self.username)
return upper
def __digit(self):
digit = any(c.isdigit() for c in self.username)
return digit
def validate(self):
lower = self.__lower()
upper = self.__upper()
digit = self.__digit()
length = len(self.username)
report = lower and upper and digit and length >= 6
if report:
print("Username passed all checks ")
return True
elif not lower:
print("You didnt use Lower case letter")
return False
elif not upper:
print("You didnt userUpper case letter")
return False
elif length <6:
print("username should Atleast have 6 character")
return False
elif not digit:
print("You didnt use Digit")
return False
else:
pass
enter username = "Youtu1221"
password = "SuperSecret123"
C = Authentication(username=username)
data = C.validate()
bcrypt = Bcrypt()
if (data):
hash = bcrypt.generate_password_hash(username)
print(hash)
else:
pass
check = bcrypt.check_password_hash(hash, "Youtudd1221")
print(check)