import ast
def register():
cred_dict = {input("Username: "): input("Password: ")}
Collect known credentials - The error occurs at "cred_data = ast.literal_eval(file.read())" "unexpected EOF while parsing (, line 0)"
with open("database.txt") as file:
cred_data = ast.literal_eval(file.read())
Add new credentials
cred_data.update(cred_dict)
Save credentials
with open("database.txt", "a") as file:
file.write(cred_data)
def login():
Load credentials
print("--------LOGIN--------")
with open("database.txt") as file:
cred_pairs = ast.literal_eval(file.read())
Do the actual login
return check_login(cred_pairs)
def check_login(credential_pairs):
Collect details
try:
username = input("Username: ")
password = input("Password: ")
except KeyboardInterrupt:
User cancelled
print("Cancelled login")
return False # tell the program we haven't logged in
Does the user exist?
if username in credential_pairs:
If true
try:
Does their password match?
if credential_pairs[username] == password:
If true
print(f"Welcome, {username}.")
return True # tell the program we've logged in
else:
If false
print("Your password is incorrect")
return False # tell the program we haven't logged in
except KeyError:
Something has gone horribly wrong!
print("Something went wrong. Is your RAM broken?")
return
Tell the program something went wrong
except KeyboardInterrupt:
User cancelled
print("Cancelled login")
return False # tell the program we haven't logged in
else:
print("That user does not exist.")
return False # tell the program we haven't logged in
If execution ever reaches here you've been hacked
return # tell the program something went wrong
command = input("Would you like to [login] or [register]?\n>>> ")
if command == "register":
register()
elif command == "login":
login()
