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    "info": {
        "author": "Steve Love",
        "author_email": "steve@arventech.com",
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        "classifiers": [
            "License :: OSI Approved :: MIT License",
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        "description": "# Pyning\n## A quick and extensible configuration management library\n\nhttps://pypi.org/project/pyning/\n\nPyning lets you take configuration entries in key/value pairs, \nand query by key. For example, you might just use a dict (or any \nMapping type):\n\n```python\nargs = { 'stop-on-error': True }\nregistry = pyning.config.Registry()\nconfig = registry.add( args ).resolve()\n\nprint( config[ 'stop-on-error' ] )\n# True\n```\n\nKeys are used as attributes on the resolved object, and can be \nused in the usual way:\n\n```python\nargs = { 'stop_on_error': True }\nregistry = pyning.config.Registry()\nconfig = registry.add( args ).resolve()\n\nprint( config.stop_on_error )\n# True\n```\n\nNB: keys with spaces, or other python syntax elements (like '-') \nwill cause this syntax to fail, but such keys can still be found \nwith the dictionary-key lookup. \n\nMultiple levels of handler are possible, with later handlers \noverride same-key settings in earlier handlers. \n\n ```python\n args = { 'stop_on_error': True }\n overrides = { 'stop_on_error': False }\n registry = pyning.config.Registry()\n config = registry.add( args ).add( overrides ).resolve()\n\n print( config.stop_on_error )\n # False\n ```\n\nYou might use this to have some configuration in a file, and\noverride with the argparse.ArgumentParser values.\n\n```python\nargs = { 'stop_on_error': True }\nparser = argparse.ArgumentParser()\nparser.add_argument( '--stop_on_error' ) \n\ncmdline = parser.parse_args()\nregistry = pyning.config.Registry()\nconfig = registry.add( args ).add( vars( cmdline ) ).resolve()\n\nprint( config.stop_on_error )\n# False\n```\n\nValues can use a limited variable substitution to swap in \nvalues from different keys. This is especially useful when\nusing the overrides feature. At present, it only works for strings.\n\n```python\npublic_args = { 'password': '${private_password}' }\noverrides = { 'private_password': 'a good strong password' }\nregistry = pyning.config.Registry()\nconfig = registry.add( public_args ).add( overrides ).resolve()\n\nprint( config.password )\n# a good strong password\n```\n\nThe syntax used to match a variable substitution can be changed by\npassing in a different regular expression pattern to the Registry\nconstructor. The default is '${variable name}', matched against\n`r'(\\$\\{(.*?)\\})'`\n\nValues don't have to be single items: they can be sequences or\neven nested Mapping objects. A convenient short-hand can be used\nto refer to nested keys, and works with variable substitution,\ntoo.\n\n```python\n    import json\n\n    args = { 'url': '${remotes.endpoint}' }\n    overrides = json.loads( '''\n        { \"remotes\": {\n            \"endpoint\": \"http://nowhere\"\n        } } '''\n                            )\n\n    cfg = Registry().add( args ).add( overrides ).resolve()\n    print( cfg.url )\n\n```\n\nAlso, nested mapping objects can still use a nested attribute\nlookup, too:\n\n```python\n    import json\n\n    args = { 'url': '${remotes.endpoint}' }\n    overrides = json.loads( '''\n        { \"remotes\": {\n            \"endpoint\": \"http://nowhere\"\n        } } '''\n                            )\n\n    cfg = Registry().add( args ).add( overrides ).resolve()\n    print( cfg.remotes.endpoint )\n\n```\n\n\n",
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        "license": "MIT",
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