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How to get package metadata using importlib in Python

abhilash

Overview

The metadata module in importlib module provides the metadata information about the installed modules. This module, along with importlib.resources module, replaces the older pkg_resources module.

Some of the metadata attributes are package version, name, description, and so on.

Note: Refer to Core metadata specifications to get all metadata attributes.

The metadata() method

The metadata() method of the metadata module provides all the core metadata specifications about a package.

Syntax

metadata.metadata(pkg_name)

The pkg_name is the package name.

Return value

The method returns an object that contains all metadata information about the package.

Code example

Let’s look at the code example:

from importlib import  metadata

sp_data = metadata.metadata("setuptools")

print("Metadata about setuptools pacakge:")
print("Version - ", sp_data['Version'])
print("Summary - ", sp_data['Summary'])

print("-"*8)
print("Metadata dictionary - ")
print(dict(sp_data))
Checking metadata of package using importlib

Code explanation

  • Line 1: We import the metadata module.
  • Line 3: We retrieve the metadata about the setuptools package using the metadata() method.
  • Lines 5 to 6: We print the individual metadata attributes like the version and print the summary.
  • Line 11: We print the dictionary representation of the object.

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