In this exercise, you are asking the user to set a alpha numeric password for any website. Put some conditions. Password must be 8 characters long.
There must be at-least one uppercase letter.
There must be at least one number.
Then show the user, you have set the correct password or not.
Sample output (Ex 6 and 7): Top 2 are for Ex-6 and bottom 2 are for Ex-7
Create your password which must have these.
Must be 8 characters long.
At least one uppercase letter.
At least one number.
Enter your password: Nidhi123
You have set the correct password.
Create your password which must have these.
Must be 8 characters long.
At least one uppercase letter.
At least one number.
Enter your password: Nidhi12!
You have set the correct password.
Create your password which must have these.
Must be 8 characters long.
At least one uppercase letter.
At least one number.
Create your password which must have these.
Must be 8 characters long.
At least one uppercase letter.
At least one number.
Enter your password: nidhi123
Your password doesn't meet the criteria.
Uppercase is missing.
Create your password which must have these.
Must be 8 characters long.
At least one uppercase letter.
At least one number.
Enter your password: nidhi 234
Your password doesn't meet the criteria.
Uppercase is missing.
It's not 8 characters long correct size.

The program in Python is as follows:

print("Create your password which must have these.\nMust be 8 characters long.\nAt least one uppercase letter.\nAt least one number.")

pwd = input("Enter your password: ")

chkLength = 0; chkUpper = 0; chkLower = 0; chkDigit = 0

if len(pwd) == 8:

   chkLength = 1

if (any(x.isupper() for x in pwd)):

   chkUpper = 1

if any(y.islower() for y in pwd):

   chkLower = 1

if any(z.isdigit() for z in pwd):

   chkDigit = 1

if chkLength == 1 and chkUpper == 1 and chkLower == 1 and chkDigit == 1:

   print("You have set the correct password.")

else:

   print("Your password doesn't meet the criteria.")

   if chkLength == 0:

       print("It's not 8 characters long correct size.")

   if chkDigit == 0:

       print("Digit is missing.")

   if chkLower == 0:

       print("Lowercase is missing.")

   if chkUpper == 0:

       print("Uppercase is missing.")

Explanation:

This prints the instruction

print("Create your password which must have these.\nMust be 8 characters long.\nAt least one uppercase letter.\nAt least one number.")

This prompts the user for password

pwd = input("Enter your password: ")

This initializes check variables to 0 (0 - false)

chkLength = 0; chkUpper = 0; chkLower = 0; chkDigit = 0

If password length is 8

if len(pwd) == 8:

Set check variable of length to 1 (1 - true)

   chkLength = 1

If password has uppercase

if (any(x.isupper() for x in pwd)):

Set check variable of uppercase to 1

   chkUpper = 1

If password has lowercase

if any(y.islower() for y in pwd):

Set check variable of lowercase to 1

   chkLower = 1

If password has digit

if any(z.isdigit() for z in pwd):

Set check variable of digits to 1

   chkDigit = 1

If all check variables is 1, then the password is correct

if chkLength == 1 and chkUpper == 1 and chkLower == 1 and chkDigit == 1:

   print("You have set the correct password.")

If otherwise,

else:

The password is incorrect

   print("Your password doesn't meet the criteria.")

The following prints the corresponding criteria that is not met, depending on the value of its check variable

   if chkLength == 0:

       print("It's not 8 characters long correct size.")

   if chkDigit == 0:

       print("Digit is missing.")

   if chkLower == 0:

       print("Lowercase is missing.")

   if chkUpper == 0:

       print("Uppercase is missing.")

this seems to be in the wrong category. but i'll take some free points my dude

posting this in wrong category will result in people seeing it who won't know the answer.