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# Configuration
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Access to Git configuration at repository, user, and system levels. Supports reading and writing configuration values with proper scope management and type conversion.
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## Capabilities
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```python { .api }
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class GitConfigParser:
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    def __init__(self, file_or_files: Union[str, list, None] = None, read_only: bool = True, merge_includes: bool = True, config_level: str = None):
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        """Initialize config parser."""
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    def get_value(self, section: str, option: str, default: Any = None) -> Any:
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        """Get configuration value."""
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    def set_value(self, section: str, option: str, value: Any) -> "GitConfigParser":
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        """Set configuration value."""
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    def write(self) -> None:
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        """Write configuration to file."""
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    def read(self) -> None:
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        """Read configuration from file."""
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    def has_option(self, section: str, option: str) -> bool:
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        """Check if option exists."""
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    def remove_option(self, section: str, option: str) -> bool:
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        """Remove configuration option."""
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    def remove_section(self, section: str) -> bool:
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        """Remove configuration section."""
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class SectionConstraint:
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    """Configuration section constraints."""
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```
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## Usage Examples
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```python
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from git import Repo
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repo = Repo('/path/to/repo')
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# Read configuration
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config = repo.config_reader()
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user_name = config.get_value('user', 'name')
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user_email = config.get_value('user', 'email')
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# Write configuration
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with repo.config_writer() as config:
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    config.set_value('user', 'name', 'John Doe')
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    config.set_value('user', 'email', 'john@example.com')
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    config.set_value('core', 'editor', 'vim')
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# Access different config levels
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user_config = repo.config_reader('user')
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system_config = repo.config_reader('system')
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```