[899] Save a dictionary as a file (JSON)

In Python, you can save a dictionary as a file using various methods, such as JSON, Pickle, or CSV. Here, I'll show you how to save a dictionary as a JSON file and then read that JSON file back into a dictionary.

Saving a Dictionary as a JSON File:

You can use the json module to save a dictionary as a JSON file. Here's an example:

import json
 
# Create a sample dictionary
data = {'name': 'Alice', 'age': 30, 'city': 'New York'}
 
# Save the dictionary as a JSON file
with open('data.json', 'w') as json_file:
    json.dump(data, json_file)

In this example, we create a dictionary data and save it as a JSON file named 'data.json' using the json.dump() method.

Reading a JSON File Back into a Dictionary:

To read the JSON file and convert it back into a dictionary, you can use the json.load() method:

# Read the JSON file and load it as a dictionary
with open('data.json', 'r') as json_file:
    loaded_data = json.load(json_file)
 
# Now, loaded_data is a dictionary containing the data from the JSON file
print(loaded_data)

In this code, we open the 'data.json' file in read mode and use json.load() to convert its contents into a dictionary, which is stored in the loaded_data variable.

Now, loaded_data will contain the same dictionary that was saved in the JSON file.

Remember to handle exceptions and error-checking when working with files to ensure your code is robust, especially when reading files that may not exist or have unexpected content.