What command writes JSON data from Python objects to a file?

The command that writes JSON data from Python objects to a file is dump(). This function is part of the json module in Python and is designed specifically for serializing Python objects into a JSON-formatted stream, which can then be written to a file.

When using dump(), you typically provide it with two arguments: the object you want to serialize and a file object that points to the location where the JSON data will be written. This function effectively converts the Python object into a JSON string and writes it directly to the specified file, allowing for more efficient data handling, especially with larger datasets.

In contrast, other functions in the json module serve different purposes. For instance, load() reads JSON data from a file and converts it into a Python object, while loads() takes a JSON-formatted string and converts it into a Python object. dumps(), on the other hand, converts a Python object into a JSON string, but it does not write that string to a file. Each of these functions has a specific use case, but for writing JSON data directly to a file, dump() is the appropriate choice.