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GroupDocs.Conversion for Python via .NET provides two primary ways to load a document: by file path or from a stream. This flexibility allows you to load documents from various storage sources. The Converter class provides specific constructors to handle each of these loading methods.

The following constructors can be used to load files from a file path:

• Converter(file_path): Initializes a converter with the specified file path.
• Converter(file_path, load_options): Initializes a converter with file path and load options.
• Converter(file_path, converter_settings): Initializes a converter with file path and converter settings.
• Converter(file_path, load_options, converter_settings): Initializes a converter with file path, load options, and converter settings.

To load files from a stream, use one of the following constructors:

• Converter(file_stream): Initializes a converter with the specified file stream.
• Converter(file_stream, load_options): Initializes a converter with file stream and load options.
• Converter(file_stream, converter_settings): Initializes a converter with file stream and converter settings.
• Converter(file_stream, load_options, converter_settings): Initializes a converter with file stream, load options, and converter settings.

The LoadOptions classes specify the type of document to be loaded and include optional parameters, such as password. Below, we have categorized the available LoadOptions into two groups: options for a format-family and options for a specific file type.

• CadLoadOptions: Options for loading CAD documents (e.g., DWG, DWF).
• CompressionLoadOptions: Options for loading compressed files (e.g., ZIP, RAR).
• DatabaseLoadOptions: Options for loading database files (e.g., NSF, LOG, SQL).
• DiagramLoadOptions: Options for loading diagram files (e.g., VSD, VSDX).
• EBookLoadOptions: Options for loading eBook files (e.g., EPUB, MOBI).
• EmailLoadOptions: Options for loading email files (e.g., EML, MSG).
• FinanceLoadOptions: Options for loading finance documents (e.g., XBRL, OFX).
• FontLoadOptions: Options for loading font files (e.g., TTF, EOT).
• GisLoadOptions: Options for loading GIS documents (e.g., SHP, GDB).
• PageDescriptionLanguageLoadOptions: Options for loading page description files (e.g., SVG, EPS).
• PersonalStorageLoadOptions: Options for loading personal storage files (e.g., OST, PST).
• PresentationLoadOptions: Options for loading presentation files (e.g., PPT, PPTX).
• SpreadsheetLoadOptions: Options for loading spreadsheet files (e.g., XLS, XLSX).
• ThreeDLoadOptions: Options for loading 3D files (e.g., FBX, THREEDS).
• WebLoadOptions: Options for loading web documents (e.g., XML, JSON).
• WordProcessingLoadOptions: Options for loading word processing files (e.g., DOC, DOCX).

• EpubLoadOptions: Options specifically for loading EPUB files.
• MboxLoadOptions: Options specifically for loading MBOX files.
• NoteLoadOptions: Options specifically for loading ONE files.
• NsfLoadOptions: Options specifically for loading NSF files.
• OlmLoadOptions: Options specifically for loading OLM files.
• PdfLoadOptions: Options specifically for loading PDF documents.
• PublisherLoadOptions: Options specifically for loading PUB files.
• TxtLoadOptions: Options specifically for loading TXT files.
• VcfLoadOptions: Options specifically for loading VCF files.

The ConverterSettings class provides several settings to control document loading behavior:

• cache: Specifies caching options with MemoryCache or FileCache.
• logger: Specifies logging options with ConsoleLogger or FileLogger.
• font_directories: An array of directory paths with custom fonts.
• temp_folder: Specifies a folder for temporary files during conversion. Defaults to a user-specific temporary folder.