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, lm_JJh Ȯ2o m_I| <6 .. highlightlang:: c .. _stringobjects: String/Bytes Objects -------------------- These functions raise :exc:`TypeError` when expecting a string parameter and are called with a non-string parameter. .. note:: These functions have been renamed to PyBytes_* in Python 3.x. Unless otherwise noted, the PyBytes functions available in 3.x are aliased to their PyString_* equivalents to help porting. .. index:: object: string .. c:type:: PyStringObject This subtype of :c:type:`PyObject` represents a Python string object. .. c:var:: PyTypeObject PyString_Type .. index:: single: StringType (in module types) This instance of :c:type:`PyTypeObject` represents the Python string type; it is the same object as ``str`` and ``types.StringType`` in the Python layer. . .. c:function:: int PyString_Check(PyObject *o) Return true if the object *o* is a string object or an instance of a subtype of the string type. .. versionchanged:: 2.2 Allowed subtypes to be accepted. .. c:function:: int PyString_CheckExact(PyObject *o) Return true if the object *o* is a string object, but not an instance of a subtype of the string type. .. versionadded:: 2.2 .. c:function:: PyObject* PyString_FromString(const char *v) Return a new string object with a copy of the string *v* as value on success, and *NULL* on failure. The parameter *v* must not be *NULL*; it will not be checked. .. c:function:: PyObject* PyString_FromStringAndSize(const char *v, Py_ssize_t len) Return a new string object with a copy of the string *v* as value and length *len* on success, and *NULL* on failure. If *v* is *NULL*, the contents of the string are uninitialized. .. versionchanged:: 2.5 This function used an :c:type:`int` type for *len*. This might require changes in your code for properly supporting 64-bit systems. .. c:function:: PyObject* PyString_FromFormat(const char *format, ...) Take a C :c:func:`printf`\ -style *format* string and a variable number of arguments, calculate the size of the resulting Python string and return a string with the values formatted into it. The variable arguments must be C types and must correspond exactly to the format characters in the *format* string. The following format characters are allowed: .. % This should be exactly the same as the table in PyErr_Format. .. % One should just refer to the other. .. % The descriptions for %zd and %zu are wrong, but the truth is complicated .. % because not all compilers support the %z width modifier -- we fake it .. % when necessary via interpolating PY_FORMAT_SIZE_T. .. % Similar comments apply to the %ll width modifier and .. % PY_FORMAT_LONG_LONG. .. % %u, %lu, %zu should have "new in Python 2.5" blurbs. +-------------------+---------------+--------------------------------+ | Format Characters | Type | Comment | +===================+===============+================================+ | :attr:`%%` | *n/a* | The literal % character. | +-------------------+---------------+--------------------------------+ | :attr:`%c` | int | A single character, | | | | represented as an C int. | +-------------------+---------------+--------------------------------+ | :attr:`%d` | int | Exactly equivalent to | | | | ``printf("%d")``. | +-------------------+---------------+--------------------------------+ | :attr:`%u` | unsigned int | Exactly