Python Pickle Example

pythonPickleDemo.py

#!/usr/bin/env python3

# How to use the Python pickle module to store arbitrary python data as a file.
# Cleaned up from the demo at: https://pythontips.com/2013/08/02/what-is-pickle-in-python/

import pickle

# Create something to store
a = ['test value','test value 2','test value 3']
# And something to compare against later
b = []

# Dump a into a pickle file as bytes 
with open("testPickleFile", 'wb') as f:
  pickle.dump(a, f)   

# Load from the previous pickle file as bytes 
with open("testPickleFile", 'rb') as f:
  b = pickle.load(f)

# Now we can compare the original data vs the loaded pickle data
print(b)    # ['test value','test value 2','test value 3']
print(a==b) # true
# And it's equivalent! 
# That's storing and loading data via pickle!