nerdcore 0.7.0

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nerdcore

Python framework for building CLI tools with commands, deployments, and entity management.

nerdcore provides the runtime, discovery, and utilities. Projects like nerdcli provide the actual command implementations.

Installation

# Editable install (development)
pip install -e ~/local-git/nerdcore

# Package install
pip install nerdcore

Concepts

Commands

Single-operation tools. Inherit from Command, declare arguments as class attributes, implement run().

from nerdcore.base_entities.command_class import Command

class MyCommand(Command):
    required_arg_keys = ['name']
    name: str = None

    def run(self):
        print(f"Hello, {self.name}")

Deployments

Multi-step orchestrations with config profile support. Inherit from Deployment.

from nerdcore.base_entities.deployment_class import Deployment

class MyDeploy(Deployment):
    app_name = 'myapp'
    required_config_keys = ['DEPLOY_TYPE']

    def run(self):
        # self.nerd_config has the loaded profile
        ...

Entity Discovery

Entities are Python files in commands/ and deployments/ directories. nerdcore discovers them by filename using fuzzy matching (Levenshtein distance). Running nerd deploy-lead finds deployments/deploy-lead.py.

Configuration

• NerdConfig: Singleton loaded from config/nerd-manifest.yaml. Profiles define deployment parameters.
• ENV: Environment variables loaded from .env via a project-specific env class.

Error Handling

• NerdUserError — user-facing errors (bad input, missing config). Clean message, no traceback.
• NerdError — internal errors. Message + traceback.

Both are defined in nerdcore.errors (import-free module to prevent circular dependencies).

Creating a New Project

nerd-new my-project

This scaffolds the standard directory structure:

my-project/
├── abilities/
├── commands/
├── config/
│   └── framework/
├── deployments/
├── tasks/
├── stor/temp/
├── .env
├── .gitignore
├── requirements.txt
└── README.md

Entry Points

nerdcore registers three console_scripts via setup.py entry_points:

Command	Entry Point
nerd	nerdcore.cli.main:main
nerd-new	nerdcore.cli.nerd_new:main
nerdcore	nerdcore.__main__:main

Publishing

bump2version patch    # or minor, major
git push && git push --tags
# Triggers CI pipeline for PyPI publishing