load_data.py

#!/usr/bin/env python

# suppose we have a key:value mapping saved to "/tmp/my_obj.json". (Note: 'json' is a file serialization format that works in a similar way as Python `dict` objects)

# first, import the built-in `json` module 
import json                              

with open("/tmp/my_obj.json", "r") as f: #  open the file in "read" mode (indicated by the second argument, "r")...
  my_obj = json.load(f)  # and create a Python dictionary object `my_obj` from the key:value pairs in the file using the `json.load` function.

# you can preview the contents of my_obj by pretty-printing it like so:  
print(json.dumps(my_obj, indent=4))

# you can also access its keys...
print(my_obj.keys())

# values...
for val in my_obj.values():
  print(val)