This document outlines the steps to create a password locker program: 1) Design the program to take a command line argument for an account name and retrieve the associated password from a dictionary to copy to the clipboard. 2) Handle the command line argument to get the specified account name. 3) Copy the correct password for the given account name from the dictionary to the clipboard. It also mentions installing third-party modules and creating a batch file to run the program.

1. Project: Password Locker
Md. Shafiuzzaman
Lecturer, Dept. of CSE, JUST

2. Step 1: Program Design and Data Structures
• You want to be able to run this program with a command line
argument that is the account’s name—for instance, email or blog
• That account’s password will be copied to the clipboard so that the
user can paste it into a Password field

3. Step 1: Program Design and Data Structures
• Open a new file editor window and save the program
• You need to start the program with a #! (shebang) line
• Since you want to associate each account’s name with its password,
you can store these as strings in a dictionary.

4. Step 1: Program Design and Data Structures

5. Step 2: Handle Command Line Arguments
• The command line arguments will be stored in the variable sys.argv
• The first item in the sys.argv list should always be a string containing
the program’s filename ('pw.py')
• Second item should be the first command line argument
• For this program, this argument is the name of the account whose
password you want
• Since the command line argument is mandatory, you display a usage
message to the user if they forget to add it

6. Step 2: Handle Command Line Arguments

7. Step 3: Copy the Right Password

8. Installing Third-Party Modules
• The pip Tool
• pip install <module name>

9. Create a batch file to run this program