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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__r* c C s | � � | js| �� dS )z<Loads configuration from configuration files and environmentN)�_load_config_filesr8 �_load_environment_vars�rG r# r# r$ �loadz s zConfiguration.loadc C s: | j dusJ d��z| �� d W S ty4 Y dS 0 dS )z7Returns the file with highest priority in configurationNz)Need to be specified a file to be editingr )r9 �_get_parser_to_modify�
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)� _dictionary�itemsrL r# r# r$ rR � s zConfiguration.items)�keyr c C sF |}t |�}z | j| W S ty@ t|� td|� ���Y n0 dS )z#Get a value from the configuration.�No such key - N)r% rQ �KeyErrorr) r )rG rS �orig_keyr# r# r$ � get_value� s zConfiguration.get_value)rS �valuer c C s| t |�}| �� | jsJ �| �� \}}|dur\t|�\}}|�|�sN|�|� |�|||� || j| j |< | � ||� dS )z$Modify a value in the configuration.N)
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z$Configuration._ensure_have_load_onlyc C s" i }t D ]}|�| j| � q|S )z3A dictionary representing the loaded configuration.)rC �updaterE )rG Zretvalr; r# r# r$ rQ � s zConfiguration._dictionaryc C s� t | �� �}|tj dd� tjgkr4t�d� dS |�� D ]V\}}|D ]H}| j durp|| j krpt�d||� qH| �
||�}| j | � ||f� qHq<dS )z,Loads configuration from configuration filesr r' zZSkipping loading configuration files due to environment's PIP_CONFIG_FILE being os.devnullNz Skipping file '%s' (variant: %s))
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z Configuration._construct_parserc C s" | j tj �| �d| �� �� dS )z.Loads configuration from environment variablesz:env:N)rE r5 r rm rw �get_environ_varsrL r# r# r$ rK * s �z$Configuration._load_environment_vars)r_ rR r c C s. i }|D ] \}}|d t |� }|||< q|S )z�Normalizes items to construct a dictionary with normalized keys.
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|tj
fV |dur�tj |gfV n tj g fV dS )a� Yields variant and configuration files associated with it.
This should be treated like items of a dictionary. The order
here doesn't affect what gets overridden. That is controlled
by OVERRIDE_ORDER. However this does control the order they are
displayed to the user. It's probably most ergononmic to display
things in the same order as OVERRIDE_ORDER
ZPIP_CONFIG_FILEN) r+ r� �getr6 r5 r r8 r, r| r r r )rG Zenv_config_filers Zshould_load_user_configr# r# r$ ro G s �z Configuration.iter_config_files)r; r c C s
| j | S )z#Get values present in a config file)rE )rG r; r# r# r$ �get_values_in_configg s z"Configuration.get_values_in_configc C s* | j s
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z Configuration._mark_as_modifiedc C s | j j� d| j�d�S )N�(�))rI �__name__rQ rL r# r# r$ �__repr__~ s zConfiguration.__repr__)N)%r� �
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