Question

Good evening, I've been toiling around with restructuring a program which is supposed to register a preexisting input file, which contains four different passwords, and have it pass through the verification process, to see which of those passwords meets all the criteria set by the highlighted parameters. The code stipulates that in order for a password to be considered valid, it should contain a minimum of 6 characters in total, at least 2 lowercase letter, at least 1 uppercase letter, at least 1 numerical digit, and one "special character". The note file that is supposed to be read by the program is referred to as passwdin-1.txt within the main, and should output a note file called passwdout.txt.

def checkpassword(password):

    numDigits = 0
    numUpperCase = 0
    numLowerCase = 0
    lPsswd = len(pswd)
    specialcharacters = False
    for ch in pswd:
        if ch.isdigit():
         numDigits+=1
        elif ch.islower():
         numLCase += 1
        elif ch.isupper():
         numUCase += 1
        if lPsswd >=6 and numDigits > 0 and numUCase > 0 and numLCase > 0:
         print("Password Accepted")
        else:
         print("Password not accepted")
        if letter=='$' or letter=='!' or letter=='%':
            contains_special_character=True
    if lPsswd < 6 :
       print("Password has to be atleast 6 characters or more; not accepted")
    elif numDigits < 1:
       print("Number of digits within password has to be at least 1;not accepted")
    elif numLCase == 0:
       print("Number of lowercase within password has to be at least 2")
    elif numUCase == 0:
       print("Number of uppercase has to be at least 1")
    elif not contains_special_character:
       print ("The password should have a special character like $ or ! or %")

    else:
       print("Password accepted")


def main():

    input_file = "F:\\passwdin-1.txt"
    output_file = "F:\\passwdout.txt"
    output_lines=[]
    with open(input_file) as input_f:
        for line in input_f:
            message=checkPassw0rd(line.rstrip('\n'))
            print(message)
            if message=="Password Accepted":
                output_lines.append(line.rstrip('\n')+" - Password Accepted")
            else:
                output_lines.append(line.rstrip('\n')+" - Password is not accepted.")
                output_lines.append(message)

    with open(output_file, 'w') as output_f:
        for line in output_lines:
            output_f.write(line)
            output_f.write("\r\n")


main()             

The expected result would be for the program to undergo the aforementioned process of reviewing a note file containing 4 distinct passwords, and outputting a resuting note file containing the results of the validation process. When a attempt to run the program in the module however, in get an error pertaining to the passwdin-1.txt file not being found within the directory, even though I'm know the file exists on my computer. Assuming this is less of an issue pertaining to my code, and more with how I get python to access the input file, I'd appreciate some guidance on how to do that.

Answer 1

Solution:

Please find below the code and output:

def checkpassword(password):
    numDigits = 0
    numUpperCase = 0
    numLowerCase = 0
    lPsswd = len(password)
    specialcharacters = False
    for ch in password:
        if ch.isdigit():
            numDigits+=1
        elif ch.islower():
            numLowerCase += 1
        elif ch.isupper():
            numUpperCase += 1
        elif ch=='$' or ch=='!' or ch=='%':
            specialcharacters=True
    if lPsswd < 6 :
       print("Password has to be atleast 6 characters or more; not accepted")
    elif numDigits < 1:
       print("Number of digits within password has to be at least 1;not accepted")
    elif numLowerCase == 0:
       print("Number of lowercase within password has to be at least 2")
    elif numUpperCase == 0:
       print("Number of uppercase has to be at least 1")
    elif not specialcharacters:
       print ("The password should have a special character like $ or ! or %")
    
    if lPsswd >= 6 and numDigits > 0 and numUpperCase > 0 and numLowerCase > 0 and specialcharacters:
        return "Password Accepted"
    else:
        return "Password not accepted"


def main():
    input_file = "E:\\pwd.txt"
    output_file = "E:\\passwdout.txt"
    output_lines=[]
    with open(input_file) as input_f:
        for line in input_f:
            message=checkpassword(line.rstrip('\n'))
            print(message)
            if message=="Password Accepted":
                output_lines.append(line.rstrip('\n')+" - Password Accepted")
            else:
                output_lines.append(line.rstrip('\n')+" - Password is not accepted.")
                output_lines.append(message)

    with open(output_file, 'w') as output_f:
        for line in output_lines:
            output_f.write(line)
            output_f.write("\r\n")


main()

Input file:

Output file: