我不能做多个声明来检查两个声明

Question

我正在python中制作一个代码来制作密码并保存在文本文件中，如果用户在文件中输入相同的密码，则会出现错误代码。问题是，虽然我做了两条语句来检查密码是否有效并且文本文件中没有相同的密码，但将检查文本文件以找到相同文件的语句。你能告诉我哪里出错了吗？

def InputString():
    String = str(input("Enter your password. :"))

    return String

def CheckPassword(Password):
    ##I declared "Index","Upper","Lower","Digit" and "Other" as Integer.
    ##In python, there is no data type for
    ##"char", so We use string instead.
    ##I use "variable" as boolean for checking password.
    Upper = 0
    Lower = 0
    Digit = 0
    Other = 0
    variable = False
    for index in range(len(Password)):

        NextChar = (Password[index:index+1])
        if NextChar >= "A" and NextChar <= "Z":
            Upper = Upper + 1
            elif NextChar >= "a" and NextChar <= "z":
            Lower = Lower + 1
        elif NextChar >= "0" and NextChar <= "9":
            Digit = Digit + 1
        else :
            Other = Other + 1

    if Upper > 1 and Lower >= 5 and (Digit - Other) > 0:
        variable = True
    else :
        variable = False

    return variable

def CheckThrough (Password):
    FileP = open("Password.txt","r")
    if FileP.mode == 'r':
        contents = FileP.read()
        if contents == Password:
            usable = False
        else :
             usable = True
    FileP.close()

    return usable


###The main programs starts here###

print("Enter the password.")
print("You must add at least 1 upper character.")
print("5 lower character")
print("and the difference between numeric character and symbols must be more than 1.")
variable = False
usable = False

while variable == False and usable == False:
    Password = InputString()
    variable = CheckPassword(Password)
    if variable == True:
        usable = CheckThrough(Password)
        if usable == True:
            print("You can use the password.")
        elif usable ==False :
            print("The password you entered is already used.")
        else :
            print("The error is ocuured.")
    else :
        print("You can't use this password, try again.")

print("Your password is",Password)

FileP = open("Password.txt","a+")
FileP.write(Password)
FileP.write("\n")
FileP.close()

Answer 1

您需要添加 .strip()，这样它就没有 space，例如 String = str(input("Enter your password. :").strip())。当您输入密码时，会有一个 space 但它不会保存到文件中，因此它总是将其读取为新密码。

我的输入=输入您的密码。 :Kingdom1hearTs

在程序中输入=“Kingdom1hearTs”

（使用 print 查看输入系统的内容）

并且 if contents == Password: 必须是 if Password in contents: 否则您将看到密码是否与整个 txt 文件相同。

NextChar = (Password[index:index+1])
        if NextChar >= "A" and NextChar <= "Z":
            Upper = Upper + 1
        elif NextChar >= "a" and NextChar <= "z": #had the wrong indentation
            Lower = Lower + 1
        elif NextChar >= "0" and NextChar <= "9":
            Digit = Digit + 1
        else :
            Other = Other + 1

我不能做多个声明来检查两个声明

I can't make multiple statement to check two statement

python-3.x

python-3.7