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Codec registry and support functions — Python 3.13.5 documentation

int PyCodec_Register(PyObject *search_function)¶

Part of the Stable ABI.

Register a new codec search function.

As side effect, this tries to load the encodings package, if not yet done, to make sure that it is always first in the list of search functions.

int PyCodec_Unregister(PyObject *search_function)¶

Part of the Stable ABI since version 3.10.

Unregister a codec search function and clear the registry’s cache. If the search function is not registered, do nothing. Return 0 on success. Raise an exception and return -1 on error.

Added in version 3.10.

int PyCodec_KnownEncoding(const char *encoding)¶

Part of the Stable ABI.

Return 1 or 0 depending on whether there is a registered codec for the given encoding. This function always succeeds.

PyObject *PyCodec_Encode(PyObject *object, const char *encoding, const char *errors)¶

Return value: New reference. Part of the Stable ABI.

Generic codec based encoding API.

object is passed through the encoder function found for the given encoding using the error handling method defined by errors. errors may be NULL to use the default method defined for the codec. Raises a LookupError if no encoder can be found.

PyObject *PyCodec_Decode(PyObject *object, const char *encoding, const char *errors)¶

Return value: New reference. Part of the Stable ABI.

Generic codec based decoding API.

object is passed through the decoder function found for the given encoding using the error handling method defined by errors. errors may be NULL to use the default method defined for the codec. Raises a LookupError if no encoder can be found.

In the following functions, the encoding string is looked up converted to all lower-case characters, which makes encodings looked up through this mechanism effectively case-insensitive. If no codec is found, a KeyError is set and NULL returned.

PyObject *PyCodec_Encoder(const char *encoding)¶

Return value: New reference. Part of the Stable ABI.

Get an encoder function for the given encoding.

PyObject *PyCodec_Decoder(const char *encoding)¶

Return value: New reference. Part of the Stable ABI.

Get a decoder function for the given encoding.

PyObject *PyCodec_IncrementalEncoder(const char *encoding, const char *errors)¶

Return value: New reference. Part of the Stable ABI.

Get an IncrementalEncoder object for the given encoding.

PyObject *PyCodec_IncrementalDecoder(const char *encoding, const char *errors)¶

Return value: New reference. Part of the Stable ABI.

Get an IncrementalDecoder object for the given encoding.

PyObject *PyCodec_StreamReader(const char *encoding, PyObject *stream, const char *errors)¶

Return value: New reference. Part of the Stable ABI.

Get a StreamReader factory function for the given encoding.

PyObject *PyCodec_StreamWriter(const char *encoding, PyObject *stream, const char *errors)¶

Return value: New reference. Part of the Stable ABI.

Get a StreamWriter factory function for the given encoding.

int PyCodec_RegisterError(const char *name, PyObject *error)¶

Part of the Stable ABI.

Register the error handling callback function error under the given name. This callback function will be called by a codec when it encounters unencodable characters/undecodable bytes and name is specified as the error parameter in the call to the encode/decode function.

The callback gets a single argument, an instance of UnicodeEncodeError, UnicodeDecodeError or UnicodeTranslateError that holds information about the problematic sequence of characters or bytes and their offset in the original string (see Unicode Exception Objects for functions to extract this information). The callback must either raise the given exception, or return a two-item tuple containing the replacement for the problematic sequence, and an integer giving the offset in the original string at which encoding/decoding should be resumed.

Return 0 on success, -1 on error.

PyObject *PyCodec_LookupError(const char *name)¶

Return value: New reference. Part of the Stable ABI.

Lookup the error handling callback function registered under name. As a special case NULL can be passed, in which case the error handling callback for “strict” will be returned.

PyObject *PyCodec_StrictErrors(PyObject *exc)¶

Return value: Always NULL. Part of the Stable ABI.

Raise exc as an exception.

PyObject *PyCodec_IgnoreErrors(PyObject *exc)¶

Return value: New reference. Part of the Stable ABI.

Ignore the unicode error, skipping the faulty input.

PyObject *PyCodec_ReplaceErrors(PyObject *exc)¶

Return value: New reference. Part of the Stable ABI.

Replace the unicode encode error with ? or U+FFFD.

PyObject *PyCodec_XMLCharRefReplaceErrors(PyObject *exc)¶

Return value: New reference. Part of the Stable ABI.

Replace the unicode encode error with XML character references.

PyObject *PyCodec_BackslashReplaceErrors(PyObject *exc)¶

Return value: New reference. Part of the Stable ABI.

Replace the unicode encode error with backslash escapes (\x, \u and \U).

PyObject *PyCodec_NameReplaceErrors(PyObject *exc)¶

Return value: New reference. Part of the Stable ABI since version 3.7.

Replace the unicode encode error with \N{...} escapes.

Added in version 3.5.

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