dealing_with_files.py

# write/overwrite file

f = open("text.txt", "w")
f.write("bla bla")
f.close()

# search for something in file

with open('data') as f:
    if 'test' in f.read():
        print("true")
f.close()

# storing and restoring dictionaries

import json

with open('data.json', 'w') as fp:
    json.dump(data, fp)

# Supply extra arguments like sort_keys or indent to get a pretty result. The argument sort_keys will sort the keys alphabetically and indent will indent your data structure with indent=N spaces.

json.dump(data, fp, sort_keys=True, indent=4)

JSON load:

with open('data.json', 'r') as fp:
    data = json.load(fp)