>>>import importlib_metadata>>>for rin importlib_metadata.distribution('celery').requires:...print(r)... pytz (>dev)>>>for rin importlib_metadata.distribution('celery').metadata.get_all('requires-dist'):...print(r)... pytz (>dev)billiard (<4.0,>=3.6.0)kombu (<5.0,>=4.4.0)vine (>=1.3.0)pyArango (>=1.3.2) ; extra == 'arangodb'cryptography ; extra == 'auth'azure-storage (==0.36.0) ; extra == 'azureblockblob'azure-common (==1.1.5) ; extra == 'azureblockblob'azure-storage-common (==1.1.0) ; extra == 'azureblockblob'brotli (>=1.0.0) ; (platform_python_implementation == "CPython") and extra == 'brotli'brotlipy (>=0.7.0) ; (platform_python_implementation == "PyPy") and extra == 'brotli'cassandra-driver ; extra == 'cassandra'python-consul ; extra == 'consul'pydocumentdb (==2.3.2) ; extra == 'cosmosdbsql'couchbase ; extra == 'couchbase'couchbase-cffi ; (platform_python_implementation == "PyPy") and extra == 'couchbase'pycouchdb ; extra == 'couchdb'Django (>=1.8) ; extra == 'django'boto3 (>=1.4.6) ; extra == 'dynamodb'elasticsearch ; extra == 'elasticsearch'eventlet (>=0.24.1) ; extra == 'eventlet'gevent ; extra == 'gevent'librabbitmq (>=1.5.0) ; extra == 'librabbitmq'backports.lzma ; (python_version < "3.3") and extra == 'lzma'pylibmc ; extra == 'memcache'pymongo[srv] (>=3.3.0) ; extra == 'mongodb'msgpack ; extra == 'msgpack'python-memcached ; extra == 'pymemcache'pyro4 ; extra == 'pyro'redis (>=3.2.0) ; extra == 'redis'riak (>=2.0) ; extra == 'riak'boto3 (>=1.4.6) ; extra == 's3'softlayer-messaging (>=1.0.3) ; extra == 'slmq'ephem ; extra == 'solar'sqlalchemy ; extra == 'sqlalchemy'boto3 (>=1.4.6) ; extra == 'sqs'pycurl ; extra == 'sqs'tblib (>=1.3.0) ; extra == 'tblib'PyYAML (>=3.10) ; extra == 'yaml'kazoo (>=1.3.1) ; extra == 'zookeeper'zstandard ; extra == 'zstd'

$ pip freeze --allamqp==2.5.0atomicwrites==1.3.0attrs==19.1.0billiard==3.6.0.0celery==4.3.0dumb-init==1.2.2importlib-metadata==0.17kombu==4.6.0more-itertools==7.0.0packaging==19.0pip==19.1.1pluggy==0.12.0py==1.8.0pyparsing==2.4.0pytest==4.6.2pytz==2019.1setuptools==41.0.1six==1.12.0vine==1.3.0wcwidth==0.1.7wheel==0.33.4zipp==0.5.1