Write a PYTHON program with a main and a sub function called checkPassword that

Question

Write a PYTHON program with a main and a sub function called checkPassword that checks whether a string is a valid password. The main function should get the user input as a string.

Define the function as def checkPassword(password). This function returns whether the password is valid or invalid. Use string methods.

Password rules: The password must

• have at least eight characters.

• contain at least two digits.

• must contain at least one uppercase letter

• must contain at least one lowercase letter

• must contain at least one of [!,@,#,$,%,^,&,*,(,)] (non-letter or non-number character)

o Create a list for these special characters

Expected output: Print one of the following based on the value returned from the function. The password you entered is valid The password you entered is invalid

Explanation / Answer

def checkPassword(password):
digitCount = 0
uppercase = 0
lowercase = 0
specialCharacter = 0
nonletter = ['!','@','#','$','%','^','&','*','(',')']
if(len(password)>=8):
for i in range(0,len(password)):
temp = ord(password[i])
if temp>=65 and temp<=90:
uppercase = uppercase + 1
if temp>=97 and temp<=122:
lowercase = lowercase+1
if temp>=48 and temp<=57:
digitCount = digitCount+1
if password[i] in nonletter:
specialCharacter = specialCharacter+1
  
if digitCount>=2 and uppercase>=1 and lowercase>=1 and specialCharacter>=1:
print 'Valid'
else:
print 'Not Valid'

password = raw_input('Enter a password : ')
checkPassword(password)

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