# _ctypes - pydoc - phpman

Help on module _ctypes:

## NAME
    _ctypes - Create and manipulate C compatible data types in Python.

## MODULE REFERENCE
    <https://docs.python.org/3.10/library/_ctypes.html>

    The following documentation is automatically generated from the Python
    source files.  It may be incomplete, incorrect or include features that
    are considered implementation detail and may vary between Python
    implementations.  When in doubt, consult the module reference at the
    location listed above.

## CLASSES
    _CData(builtins.object)
        Array
        CFuncPtr
        Structure
        Union
    builtins.Exception(builtins.BaseException)
        ctypes.ArgumentError

### class ArgumentError
     |  Method resolution order:
     |      ArgumentError
     |      builtins.Exception
     |      builtins.BaseException
     |      builtins.object
     |
     |  Data descriptors defined here:
     |
     |  __weakref__
     |      list of weak references to the object (if defined)
     |
     |  ----------------------------------------------------------------------
     |  Methods inherited from builtins.Exception:
     |
     |  __init__(self, /, *args, **kwargs)
     |      Initialize self.  See help(type(self)) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Static methods inherited from builtins.Exception:
     |
     |  __new__(*args, **kwargs) from builtins.type
     |      Create and return a new object.  See help(type) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Methods inherited from builtins.BaseException:
     |
     |  __delattr__(self, name, /)
     |      Implement delattr(self, name).
     |
     |  __getattribute__(self, name, /)
     |      Return getattr(self, name).
     |
     |  __reduce__(...)
     |      Helper for pickle.
     |
     |  __repr__(self, /)
     |      Return repr(self).
     |
     |  __setattr__(self, name, value, /)
     |      Implement setattr(self, name, value).
     |
     |  __setstate__(...)
     |
     |  __str__(self, /)
     |      Return str(self).
     |
     |  with_traceback(...)
     |      Exception.with_traceback(tb) --
     |      set self.__traceback__ to tb and return self.
     |
     |  ----------------------------------------------------------------------
     |  Data descriptors inherited from builtins.BaseException:
     |
     |  __cause__
     |      exception cause
     |
     |  __context__
     |      exception context
     |
     |  __dict__
     |
     |  __suppress_context__
     |
     |  __traceback__
     |
     |  args

### class Array
     |  XXX to be provided
     |
     |  Method resolution order:
     |      Array
     |      _CData
     |      builtins.object
     |
     |  Methods defined here:
     |
     |  __delitem__(self, key, /)
     |      Delete self[key].
     |
     |  __getitem__(self, key, /)
     |      Return self[key].
     |
     |  __init__(self, /, *args, **kwargs)
     |      Initialize self.  See help(type(self)) for accurate signature.
     |
     |  __len__(self, /)
     |      Return len(self).
     |
     |  __setitem__(self, key, value, /)
     |      Set self[key] to value.
     |
     |  ----------------------------------------------------------------------
     |  Class methods defined here:
     |
     |  __class_getitem__(...) from PyCArrayType
     |      See PEP 585
     |
     |  ----------------------------------------------------------------------
     |  Static methods defined here:
     |
     |  __new__(*args, **kwargs) from PyCArrayType
     |      Create and return a new object.  See help(type) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Methods inherited from _CData:
     |
     |  __ctypes_from_outparam__(...)
     |
     |  __hash__(self, /)
     |      Return hash(self).
     |
     |  __reduce__(...)
     |      Helper for pickle.
     |
     |  __setstate__(...)

### class CFuncPtr
     |  Function Pointer
     |
     |  Method resolution order:
     |      CFuncPtr
     |      _CData
     |      builtins.object
     |
     |  Methods defined here:
     |
     |  __bool__(self, /)
     |      True if self else False
     |
     |  __call__(self, /, *args, **kwargs)
     |      Call self as a function.
     |
     |  __repr__(self, /)
     |      Return repr(self).
     |
     |  ----------------------------------------------------------------------
     |  Static methods defined here:
     |
     |  __new__(*args, **kwargs) from PyCFuncPtrType
     |      Create and return a new object.  See help(type) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Data descriptors defined here:
     |
     |  argtypes
     |      specify the argument types
     |
     |  errcheck
     |      a function to check for errors
     |
     |  restype
     |      specify the result type
     |
     |  ----------------------------------------------------------------------
     |  Methods inherited from _CData:
     |
     |  __ctypes_from_outparam__(...)
     |
     |  __hash__(self, /)
     |      Return hash(self).
     |
     |  __reduce__(...)
     |      Helper for pickle.
     |
     |  __setstate__(...)

### class Structure
     |  Structure base class
     |
     |  Method resolution order:
     |      Structure
     |      _CData
     |      builtins.object
     |
     |  Methods defined here:
     |
     |  __init__(self, /, *args, **kwargs)
     |      Initialize self.  See help(type(self)) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Static methods defined here:
     |
     |  __new__(*args, **kwargs) from PyCStructType
     |      Create and return a new object.  See help(type) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Methods inherited from _CData:
     |
     |  __ctypes_from_outparam__(...)
     |
     |  __hash__(self, /)
     |      Return hash(self).
     |
     |  __reduce__(...)
     |      Helper for pickle.
     |
     |  __setstate__(...)

### class Union
     |  Union base class
     |
     |  Method resolution order:
     |      Union
     |      _CData
     |      builtins.object
     |
     |  Methods defined here:
     |
     |  __init__(self, /, *args, **kwargs)
     |      Initialize self.  See help(type(self)) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Static methods defined here:
     |
     |  __new__(*args, **kwargs) from UnionType
     |      Create and return a new object.  See help(type) for accurate signature.
     |
     |  ----------------------------------------------------------------------
     |  Methods inherited from _CData:
     |
     |  __ctypes_from_outparam__(...)
     |
     |  __hash__(self, /)
     |      Return hash(self).
     |
     |  __reduce__(...)
     |      Helper for pickle.
     |
     |  __setstate__(...)

## FUNCTIONS
    POINTER(...)

    PyObj_FromPtr(...)

    Py_DECREF(...)

    Py_INCREF(...)

### addressof
        addressof(C instance) -> integer
        Return the address of the C instance internal buffer

### alignment
        alignment(C type) -> integer
        alignment(C instance) -> integer
        Return the alignment requirements of a C instance

### buffer_info
        Return buffer interface information

### byref
        byref(C instance[, offset=0]) -> byref-object
        Return a pointer lookalike to a C instance, only usable
        as function argument

### call_cdeclfunction

### call_function

### dlclose
        dlclose a library

### dlopen
        dlopen(name, flag={RTLD_GLOBAL|RTLD_LOCAL}) open a shared library

### dlsym
        find symbol in shared library

### get_errno

### pointer

### resize
        Resize the memory buffer of a ctypes instance

### set_errno

### sizeof
        sizeof(C type) -> integer
        sizeof(C instance) -> integer
        Return the size in bytes of a C instance

## DATA
    FUNCFLAG_CDECL = 1
    FUNCFLAG_PYTHONAPI = 4
    FUNCFLAG_USE_ERRNO = 8
    FUNCFLAG_USE_LASTERROR = 16
    RTLD_GLOBAL = 256
    RTLD_LOCAL = 0

## VERSION
    1.1.0

## FILE
    /usr/lib/python3.10/lib-dynload/_ctypes.cpython-310-x86_64-linux-gnu.so