![](/img/trans.png)
[英]how to use two kinds of users with the current_user function on the flask_login library?
[英]Function for two users
我有兩個用戶的登錄系統。 我有重復的代碼,但我將其設為使代碼更有效的功能。 但是,我不太確定如何為每個用戶更改一些變量。 這是代碼:
def login_system():
loggedin = False
while not loggedin:
login=input("Do you have an account? (yes/no) ")
loggedin=False
if login.lower()=="yes":
login=open("login.csv")
reader = csv.reader(login)
username=input("What is your username: ")
password=input("What is your password: ")
for row in reader:
if row[0]==username and row[1]==password:
print("Welcome " + username)
loggedin=True
break
if loggedin==False:
print("Invalid username or password. Please try again.")
continue
elif login.lower()=="no":
print(" ")
print("Make an account.")
print(" ")
username=input("What is your username: ")
password=input("What is your password: ")
break
else:
print("Invalid input.")
continue
print("User 1:")
login_system()
print("")
print("User 2:")
login_system()
基本上,我希望用戶1和用戶2的用戶名和密碼不同,但是我不知道從哪里開始,似乎也無濟於事。 當我輸入用戶2的用戶名和密碼時,它將覆蓋我對用戶1的輸入,並且我不希望這種情況發生。 謝謝,
迪倫
看來您正在練習python或一個簡單的問題,好吧,我添加了可以自行開發的Pseudo代碼,因為它很簡單,如果您自己編寫此代碼,它將幫助您考慮該范式以解決此問題。
每當您想做某事或實施某件事,分步進行或寫下來時,它都會有很大幫助。
閱讀此順便說一句。
def login_system():
loggedin = False
while not loggedin:
login=input("Do you have an account? (yes/no) ")
loggedin=False
if login.lower()=="yes":
login=open("login.csv")
reader = csv.reader(login)
username=input("What is your username: ")
password=input("What is your password: ")
for row in reader:
if row[0]==username and row[1]==password:
print("Welcome " + username)
loggedin=True
break
if loggedin==False:
print("Invalid username or password. Please try again.")
continue
elif login.lower()=="no":
print(" ")
print("Make an account.")
print(" ")
username=input("What is your username: ")
password=input("What is your password: ")
#How to Save Username and password
#1. Find Two Empty Rows or one empty row and it's corresponding column in CSV file. (Can be done using running a loop on the csv file)
#2. Store Username password in the corresponding rows and columns above.
break
else:
print("Invalid input.")
continue
print("User 1:")
login_system()
print("")
print("User 2:")
login_system()
根據您的要求,如果您存儲了成功登錄的用戶名和密碼字典,則對您來說可能會更好
使您的代碼如下。
users_logged_in={}
def login_system():
loggedin = False
while not loggedin:
login=input("Do you have an account? (yes/no) ")
loggedin=False
if login.lower()=="yes":
login=open("login.csv")
reader = csv.reader(login)
username=input("What is your username: ")
password=input("What is your password: ")
for row in reader:
if row[0]==username and row[1]==password:
print("Welcome " + username)
# usernames and passwords you have entered stored in dict
users_logged_in[username]=password
loggedin=True
break
if loggedin==False:
print("Invalid username or password. Please try again.")
continue
elif login.lower()=="no":
print(" ")
print("Make an account.")
print(" ")
username=input("What is your username: ")
password=input("What is your password: ")
break
else:
print("Invalid input.")
continue
print("User 1:")
login_system()
print("")
print("User 2:")
login_system()
如果要保留登錄到系統中的用戶名的順序,請從Python集合轉到OrderedDict 。
否則,您可以使用用戶名和密碼的元組創建列表。
logged_user_details=(username,passowrd)
然后讓
users_logged_in
是用戶名和密碼的列表,將上面創建的元組附加到該列表。
users_logged_in.append(logged_user_details).
現在,您的列表中將包含用戶和密碼,如下所示,並且輸入順序也將保留。
[(User1,Password1),(User2,Password2),(User3,Password3)]。
無論使用List還是Dict方法,這完全取決於您存儲用戶名和密碼的使用目的。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.