[Solved] Chapter 1: Hello, World!

https://www.youtube.com/playlist?list=PLhOuww6rJJNP7UvTeF6_tQ1xcubAs9hvO

Write a program to enthusiastically greet the world:

$ ./hello.pyHello, World!

The program should also accept a name given as an optional --name parameter:

$ ./hello.py --name UniverseHello, Universe!

The program should produce documentation for -h or --help:

$ ./hello.py -husage: hello.py [-h] [-n str]Say hellooptional arguments:  -h, --help          show this help message and exit  -n str, --name str  The name to greet (default: World)

Run pytest -xv test.py (or make test) to ensure you pass all the tests:

$ make testpytest -xv test.py============================= test session starts ==============================...collected 4 itemstest.py::test_exists PASSED                                              [ 25%]test.py::test_usage PASSED                                               [ 50%]test.py::test_default PASSED                                             [ 75%]test.py::test_input PASSED                                               [100%]============================== 4 passed in 0.41s ===============================