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rdndZ%dd Z&G dd de'Z(dS )a Configuration management setup
Some terminology:
- name
As written in config files.
- value
Value associated with a name
- key
Name combined with it's section (section.name)
- variant
A single word describing where the configuration key-value pair came from
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Configurationa Handles management of configuration.
Provides an interface to accessing and managing configuration files.
This class converts provides an API that takes "section.key-name" style
keys and stores the value associated with it as "key-name" under the
section "section".
This allows for a clean interface wherein the both the section and the
key-name are preserved in an easy to manage form in the configuration files
and the data stored is also nice.
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zConfiguration.__init__c C s | j | js| j dS )zELoads configuration from configuration files and environment
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rz } zt|dW Y d d }~X nX |S )Nz contains invalid {} charactersF)reasonrd )error) r RawConfigParserr, r- existsreadUnicodeDecodeErrorr r localegetpreferredencodingError)rO rd re r r r r r} / s
z Configuration._construct_parserc C s" | j tj j| jd| j dS )z7Loads configuration from environment variables
z:env:N)rM r8 r+ rt r get_environ_vars)rO r r r rS F s z$Configuration._load_environment_varsc C s2 i }x(|D ] \}}|d t | }|||< q
W |S )zNormalizes items to construct a dictionary with normalized keys.
This routine is where the names become keys and are made the same
regardless of source - configuration files or environment.
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z Configuration._normalized_keysc c sV xPt jj D ]B\}}|jdo2|dd j | jk}|r |dd j |fV q W dS )z@Returns a generator with all environmental vars with prefix PIP_PIP_ N)r, environrZ r r rK )rO r\ r should_be_yieldedr r r r [ s
z Configuration.get_environ_varsc c s t jjdd}|dk r&tj|gfV n tjg fV t }tj|tj fV | j ob|o`t jj | }|rztj
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PIP_CONFIG_FILEN) r, r getr8 r* r= r( rH r- r r' r) )rO config_filer{ should_load_user_configr r r rw g s z Configuration.iter_config_filesc C s
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