How to make a JSON reader in python

how_to_make_a_json_reader_in_python.txt

Make a JSON file reader

Create reader.py

Make a function test_hello() that prints "Hello"

Make a function test_goodbye() that prints "Goodbye"

At the end of the file make a function main()
Main should choose to run either test_hello() or test_goodbye() depending on the command line argument.

Run the file with command line argument h:
    python reader.py h
and see Hello

Run 
    python reader.py g
and see Goodbye

You may have to study python command line arguments.

Ok that was simple, but that is your testing user interface.

Now create file reader.json and put a little json in it to describe your friends.
For example:
    name Bob
    age 16
    hair black

    name Joe
    age 17
    hair green

You can google how to write and read json
You can test reader.json at https://jsonviewer.stack.hu/

Next, at the top of reader.py add readjson()
This function will:
    Open the file reader.json
    Read the contents into a dictionary
    Return the dictionary

You will need to install the json package and use json.loads()

Below readjson(), make the function test_view()

Inside test_view(), call readjson(), and print the dictionary using json.dumps()

Finally, modify main() so it will execute test_view() when you run

python reader.py v

Future Ideas: 

Make a json file editor. Create functions to add another person, to just print the
names, to print the names alphabetically, to save changes to reader.json