pyegeria: a python client for Egeria
A lightweight Python 3.12+ client and CLI for the Egeria open metadata and governance platform. It helps you configure and operate Egeria services and work with metadata (assets, glossaries, lineage, etc.) from Python, with examples, tests, and documented report formats.
This is a package for easily using the Egeria open metadata environment from python. Details about the open source Egeria project can be found at Egeria Project.
This package is in active development. There is initial support for many of Egeria's services including configuration and operation. This client depends on This release supports Egeria 6.0 - although most of the functions may work on earlier versions of Egeria as well.
The code is organized to mimic the existing Egeria Java Client structure.
The commands folder holds the Egeria Command Line Interface and corresponding commands to visualize and use Egeria. The commands also serve as useful examples.
An examples folder holds some useful examples showing different facets of using pyegeria.
Documentation
For detailed information on using pyegeria, see:
- docs/user_programming.md: A comprehensive guide to the programming model, configuration, and client usage.
- docs/output-formats-and-report-specs.md: Guidance on output formats and report specs (including nested/master–detail).
- md_processing/v2/README.md: Detailed documentation on the Dr. Egeria v2 (Async) markdown processing engine, including rules for attribute validation and reference resolution.
Report specs: families and filtering
Report specs (aka format sets) can be tagged with an optional family string to help organize and discover related specs.
- Show names with family and sort by family, then name:
from pyegeria.view.base_report_formats import report_spec_list
names = report_spec_list(show_family=True, sort_by_family=True)
for n in names:
print(n)
- Filter specs by family programmatically:
from pyegeria.view.base_report_formats import report_specs
# Exact family match (case-insensitive)
security_specs = report_specs.filter_by_family("Security")
# Specs with no family assigned
no_family_specs = report_specs.filter_by_family("")
WARNING: files that start with "X" are in-progress placeholders that are not meant to be used..they will mature and evolve.
All feedback is welcome. Please engage via our community, team calls, or via github issues in this repo. If interested in contributing, you can engage via the community or directly reach out to dan.wolfson@pdr-associates.com.
This is a learning experience.
Configuration
pyegeria uses a centralized configuration system powered by Pydantic. Clients (like EgeriaTech or EgeriaCat) automatically pick up these settings if parameters are omitted during initialization.
Precedence for configuration:
- Explicitly passed parameters to client constructors
- Environment variables (OS env and optional .env)
- Config file (JSON) if found
- Built-in defaults
For more details on setting up your configuration and available variables, see docs/user_programming.md.
Example .env
PYEGERIA_CONFIG_DIRECTORY=/path/to/configs
PYEGERIA_ROOT_PATH=/path/to/project
PYEGERIA_CONFIG_FILE=config.json
EGERIA_PLATFORM_URL=https://localhost:9443
EGERIA_VIEW_SERVER=qs-view-server
EGERIA_VIEW_SERVER_URL=https://localhost:9443
EGERIA_USER=myuser
EGERIA_USER_PASSWORD=mypassword
EGERIA_WIDTH=280
Lines starting with # are comments. Quotes are optional; python-dotenv/pydantic-settings handle both.
Example config.json (minimal)
{ "Environment": { "Pyegeria Root": ".", "Egeria Platform URL": "https://localhost:9443" }, "User Profile": { "Egeria Home Collection": "MyHome" } }
Programmatic usage
from pyegeria import get_app_config cfg = get_app_config() # uses OS env and ./.env
or with explicit env file
cfg = get_app_config(env_file="/path/to/dev.env")
Access values via Pydantic models
print(cfg.Environment.egeria_platform_url) print(cfg.Logging.enable_logging)
CLI quick checks
-
Validate your env file: python scripts/validate_env.py --env config/env python scripts/validate_env.py # auto-detects ./config/env or ./.env
-
Sync Report Specs with Dr.Egeria Commands: hey_egeria tech gen-report-specs md_processing/data/compact_commands --merge
Testing
By default, running pytest executes unit tests that use monkeypatching/fakes and do not contact a live Egeria.
- Run unit tests (recommended default): uv sync pytest -v
You can also run tests live against a local Egeria instance. Enable live mode with either a CLI flag or an environment variable. In live mode, tests marked as unit are skipped and live tests run using a real Client2 connection.
-
Enable live mode via CLI: pytest -q --live-egeria
-
Or enable via environment variable: PYEG_LIVE_EGERIA=1 pytest -q
Default live connection parameters (can be overridden via env):
- server_name = "qs-view-server" (override with PYEG_SERVER_NAME)
- platform_url = "https://localhost:9443" (override with PYEG_PLATFORM_URL)
- user_id = "peterprofile" (override with PYEG_USER_ID)
- user_pwd = "secret" (override with PYEG_USER_PWD)
Notes:
- SSL verification is controlled by pyegeria._globals.enable_ssl_check, which defaults to False in this repo to support localhost/self-signed certs.
- See tests/conftest.py for the live test fixtures and switches.
Troubleshooting
- If your env doesn’t seem to apply, confirm which config.json is used (the loader checks PYEGERIA_CONFIG_DIRECTORY first, then PYEGERIA_ROOT_PATH, then ./config.json).
- .env files are optional. Missing .env is not an error.
- You can always override values with OS environment variables (they take precedence over config.json).
License: CC BY 4.0, Copyright Contributors to the ODPi Egeria project.
1 maintainer
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