PythonQt Class Reference

The main interface to the Python Qt binding, realized as a singleton. More...

#include <PythonQt.h>

Inheritance diagram for PythonQt:

Public Types
enum	InitFlags { RedirectStdOut = 1 , IgnoreSiteModule = 2 , ExternalHelp = 4 , PythonAlreadyInitialized = 8 }
	flags that can be passed to PythonQt::init() More...
enum	TypeSlots {   Type_Add = 1 , Type_Subtract = 1 << 1 , Type_Multiply = 1 << 2 , Type_Divide = 1 << 3 ,   Type_Mod = 1 << 4 , Type_And = 1 << 5 , Type_Or = 1 << 6 , Type_Xor = 1 << 7 ,   Type_LShift = 1 << 8 , Type_RShift = 1 << 9 , Type_InplaceAdd = 1 << 10 , Type_InplaceSubtract = 1 << 11 ,   Type_InplaceMultiply = 1 << 12 , Type_InplaceDivide = 1 << 13 , Type_InplaceMod = 1 << 14 , Type_InplaceAnd = 1 << 15 ,   Type_InplaceOr = 1 << 16 , Type_InplaceXor = 1 << 17 , Type_InplaceLShift = 1 << 18 , Type_InplaceRShift = 1 << 19 ,   Type_Length = 1 << 20 , Type_MappingSetItem = 1 << 21 , Type_MappingGetItem = 1 << 22 , Type_EnterExit = 1 << 23 ,   Type_Invert = 1 << 29 , Type_RichCompare = 1 << 30 , Type_NonZero = 1 << 31 }
	flags that tell PythonQt which operators to expect on the registered type More...
enum	ProfilingCallbackState { Enter = 1 , Leave = 2 }
	enum for profiling callback More...
typedef void	ProfilingCB(ProfilingCallbackState state, const char *className, const char *methodName, PyObject *args)

Public Member Functions
Standard input handling
void	setRedirectStdInCallback (PythonQtInputChangedCB *callback, void *callbackData=nullptr)
void	setRedirectStdInCallbackEnabled (bool enabled)
Modules
PythonQtObjectPtr	getMainModule ()
	get the main module of python More...
PythonQtObjectPtr	importModule (const QString &name)
PythonQtObjectPtr	createModuleFromFile (const QString &name, const QString &filename)
PythonQtObjectPtr	createModuleFromScript (const QString &name, const QString &script=QString())
PythonQtObjectPtr	createUniqueModule ()
Importing/Paths
void	overwriteSysPath (const QStringList &paths)
	overwrite the python sys path (call this directly after PythonQt::init() if you want to change the std python sys path) More...
void	addSysPath (const QString &path)
	prepend a path to sys.path to allow importing from it More...
void	setModuleImportPath (PyObject *module, const QStringList &paths)
	sets the path list of a module to the given list (important for local imports) More...
Registering Classes
void	registerClass (const QMetaObject *metaobject, const char *package=nullptr, PythonQtQObjectCreatorFunctionCB *wrapperCreator=nullptr, PythonQtShellSetInstanceWrapperCB *shell=nullptr)
	registers a QObject derived class to PythonQt (this is implicitly called by addObject as well) More...
void	registerCPPClass (const char *typeName, const char *parentTypeName=nullptr, const char *package=nullptr, PythonQtQObjectCreatorFunctionCB *wrapperCreator=nullptr, PythonQtShellSetInstanceWrapperCB *shell=nullptr)
void	registerQObjectClassNames (const QStringList &names)
bool	addParentClass (const char *typeName, const char *parentTypeName, int upcastingOffset=0)
void	addPolymorphicHandler (const char *typeName, PythonQtPolymorphicHandlerCB *cb)
	add a handler for polymorphic downcasting More...
Script Parsing and Evaluation
PythonQtObjectPtr	parseFile (const QString &filename)
	parses the given file (using PythonQt's own import mechanism) and returns the python code object, this can then be used to call evalCode() More...
PythonQtObjectPtr	parseFileWithPythonLoaders (const QString &filename)
QVariant	evalCode (PyObject *object, PyObject *pycode)
QVariant	evalScript (PyObject *object, const QString &script, int start=Py_file_input)
	evaluates the given script code and returns the result value More...
QVariant	evalScript (const QString &script, PyObject *globals, PyObject *locals, int start)
	evaluates the given script code in context of given globals and locals and returns the result value More...
void	evalFile (PyObject *object, const QString &filename)
	evaluates the given script code from file More...
Signal Handlers
bool	addSignalHandler (QObject *obj, const char *signal, PyObject *module, const QString &objectname)
	add a signal handler to the given signal of obj and connect it to a callable objectname in module More...
bool	removeSignalHandler (QObject *obj, const char *signal, PyObject *module, const QString &objectname)
	remove a signal handler from the given signal of obj More...
bool	addSignalHandler (QObject *obj, const char *signal, PyObject *receiver)
	add a signal handler to the given signal of obj and connect it to a callable receiver More...
bool	removeSignalHandler (QObject *obj, const char *signal, PyObject *receiver)
	remove a signal handler from the given signal of obj More...
void	removeSignalHandlers ()
	globally removes all signal handlers (connections between QObjects and Python). More...
Variable access
void	addObject (PyObject *object, const QString &name, QObject *qObject)
	add the given qObject to the python object as a variable with name (it can be removed via clearVariable) More...
void	addVariable (PyObject *object, const QString &name, const QVariant &v)
	add the given variable to the object More...
void	removeVariable (PyObject *module, const QString &name)
	remove the given variable More...
QVariant	getVariable (PyObject *object, const QString &name)
	get the variable with the name of the object, returns an invalid QVariant on error More...
QVariant	getNativeVariable (PyObject *object, const QString &name)
	get the variable with the name of the object as QVariant of type PythonQtObjectPtr, returns an invalid QVariant on error More...
QStringList	introspection (PyObject *object, const QString &objectname, ObjectType type)
	read vars etc. in scope of an object, optional looking inside of an object objectname More...
QStringList	introspectObject (PyObject *object, ObjectType type)
	read vars etc. in scope of the given object More...
QStringList	introspectType (const QString &typeName, ObjectType type)
PythonQtObjectPtr	lookupCallable (PyObject *object, const QString &name)
QString	getReturnTypeOfWrappedMethod (PyObject *module, const QString &objectname)
	returns the return type of the method of a wrapped c++ object referenced by objectname More...
QString	getReturnTypeOfWrappedMethod (const QString &typeName, const QString &methodName)
	returns the return type of the method methodName of a wrapped c++ type referenced by typeName More...
Calling Python Objects
QVariant	call (PyObject *object, const QString &callable, const QVariantList &args=QVariantList(), const QVariantMap &kwargs=QVariantMap())
	call the given python callable in the scope of object, returns the result converted to a QVariant More...
QVariant	call (PyObject *callable, const QVariantList &args=QVariantList(), const QVariantMap &kwargs=QVariantMap())
	call the given python object, returns the result converted to a QVariant More...
PyObject *	callAndReturnPyObject (PyObject *callable, const QVariantList &args=QVariantList(), const QVariantMap &kwargs=QVariantMap())
	call the given python object, returns the result as new PyObject More...
Decorations, Constructors, Wrappers...
void	addInstanceDecorators (QObject *o)
void	addClassDecorators (QObject *o)
void	addDecorators (QObject *o)
	this will add the object both as class and instance decorator (ownership is passed to PythonQt) More...
void	addWrapperFactory (PythonQtCppWrapperFactory *factory)
	add the given factory to PythonQt (ownership stays with caller) More...
void	addWrapperFactory (PythonQtForeignWrapperFactory *factory)
	add the given factory to PythonQt (ownership stays with caller) More...
void	removeWrapperFactory (PythonQtCppWrapperFactory *factory)
	remove the wrapper factory More...
void	removeWrapperFactory (PythonQtForeignWrapperFactory *factory)
	remove the wrapper factory More...

Singleton Initialization
enum	ObjectType {   Class , Function , Variable , Module ,   Anything , CallOverloads }
	defines the object types for introspection More...
static void	init (int flags=IgnoreSiteModule|RedirectStdOut, const QByteArray &pythonQtModuleName=QByteArray())
static void	cleanup ()
	cleanup of the singleton More...
static PythonQt *	self ()
	get the singleton instance More...

Other Stuff
static PythonQtPrivate *	priv ()
	get access to internal data (should not be used on the public API, but is used by some C functions) More...
static void	qObjectNoLongerWrappedCB (QObject *o)
	call the callback if it is set More...
static QString	qObjectMissingAttributeCallback (QObject *o, const QString &attribute)
	call the callback if it is set More...
static void	setEnableThreadSupport (bool flag)
void	clearNotFoundCachedMembers ()
bool	handleError (bool printStack=true)
bool	hadError () const
	return true if handleError() has been called and an error occurred. More...
void	clearError ()
void	setSystemExitExceptionHandlerEnabled (bool value)
bool	systemExitExceptionHandlerEnabled () const
void	setQObjectWrappedCallback (PythonQtQObjectWrappedCB *cb)
	set a callback that is called when a QObject with parent == NULL is wrapped by PythonQt More...
void	setQObjectNoLongerWrappedCallback (PythonQtQObjectNoLongerWrappedCB *cb)
	set a callback that is called when a QObject with parent == NULL is no longer wrapped by PythonQt More...
void	setQObjectMissingAttributeCallback (PythonQtQObjectMissingAttributeCB *cb)
	set a callback that is called when a QObject does not have a specific attribute. More...
PyObject *	helpCalled (PythonQtClassInfo *info)
	called by internal help methods More...
PythonQtObjectPtr	lookupObject (PyObject *module, const QString &name)
void	setProfilingCallback (ProfilingCB *cb)
	sets a callback that is called before and after function calls for profiling More...
void	pythonStdOut (const QString &str)
	emitted when python outputs something to stdout (and redirection is turned on) More...
void	pythonStdErr (const QString &str)
	emitted when python outputs something to stderr (and redirection is turned on) More...
void	pythonHelpRequest (const QByteArray &cppClassName)
	emitted when help() is called on a PythonQt object and ExternalHelp is enabled More...
void	systemExitExceptionRaised (int exitCode)

Custom Importer
static PythonQtImportFileInterface *	importInterface ()
	get access to the file importer (if set) More...
void	setImporter (PythonQtImportFileInterface *importInterface)
void	installDefaultImporter ()
void	setImporterIgnorePaths (const QStringList &paths)
	set paths that the importer should ignore More...
const QStringList &	getImporterIgnorePaths ()
	get paths that the importer should ignore More...

Detailed Description

The main interface to the Python Qt binding, realized as a singleton.

Use PythonQt::init() to initialize the singleton and PythonQt::self() to access it. While there can be only one PythonQt instance, you can have any number of Python context to do scripting in. One possibility is to use createModuleFromFile(), createModuleFromScript() or createUniqueModule() to get a context that is separated from the other contexts. Alternatively you can use Python dicts as contexts for script evaluation, but you will need to populate the dict with the builtins instance to have all Pythons available when running code in the scope of a dict.

Definition at line 169 of file PythonQt.h.

Member Typedef Documentation

ProfilingCB

typedef void PythonQt::ProfilingCB(ProfilingCallbackState state, const char *className, const char *methodName, PyObject *args)

callback for profiling. className and methodName are only passed when state == Enter, otherwise they are NULL.

Definition at line 227 of file PythonQt.h.

Member Enumeration Documentation

InitFlags

enum PythonQt::InitFlags

flags that can be passed to PythonQt::init()

Enumerator
RedirectStdOut	< sets if the std out/err is redirected to pythonStdOut() and pythonStdErr() signals
IgnoreSiteModule	< sets if Python should ignore the site module
ExternalHelp	< sets if help() calls on PythonQt modules are forwarded to the pythonHelpRequest() signal
PythonAlreadyInitialized	< sets that PythonQt should not can PyInitialize, since it is already done

Definition at line 176 of file PythonQt.h.

                 {
    RedirectStdOut = 1,   
    IgnoreSiteModule = 2, 
    ExternalHelp = 4,     
    PythonAlreadyInitialized = 8 
  };

ObjectType

enum PythonQt::ObjectType

defines the object types for introspection

Enumerator
Class
Function
Variable
Module
Anything
CallOverloads

Definition at line 247 of file PythonQt.h.

                  {
    Class,
    Function,
    Variable,
    Module,
    Anything,
    CallOverloads
  };

ProfilingCallbackState

enum PythonQt::ProfilingCallbackState

enum for profiling callback

Enumerator
Enter
Leave

Definition at line 220 of file PythonQt.h.

                              {
    Enter = 1,
    Leave = 2
  };

TypeSlots

enum PythonQt::TypeSlots

flags that tell PythonQt which operators to expect on the registered type

Enumerator
Type_Add
Type_Subtract
Type_Multiply
Type_Divide
Type_Mod
Type_And
Type_Or
Type_Xor
Type_LShift
Type_RShift
Type_InplaceAdd
Type_InplaceSubtract
Type_InplaceMultiply
Type_InplaceDivide
Type_InplaceMod
Type_InplaceAnd
Type_InplaceOr
Type_InplaceXor
Type_InplaceLShift
Type_InplaceRShift
Type_Length
Type_MappingSetItem
Type_MappingGetItem
Type_EnterExit
Type_Invert
Type_RichCompare
Type_NonZero

Definition at line 184 of file PythonQt.h.

                 {
    Type_Add = 1,
    Type_Subtract = 1 << 1,
    Type_Multiply = 1 << 2,
    Type_Divide = 1 << 3,
    Type_Mod = 1 << 4,
    Type_And = 1 << 5,
    Type_Or = 1 << 6,
    Type_Xor = 1 << 7,
    Type_LShift = 1 << 8,
    Type_RShift = 1 << 9,
 
    Type_InplaceAdd = 1 << 10,
    Type_InplaceSubtract = 1 << 11,
    Type_InplaceMultiply = 1 << 12,
    Type_InplaceDivide = 1 << 13,
    Type_InplaceMod = 1 << 14,
    Type_InplaceAnd = 1 << 15,
    Type_InplaceOr = 1 << 16,
    Type_InplaceXor = 1 << 17,
    Type_InplaceLShift = 1 << 18,
    Type_InplaceRShift = 1 << 19,
 
    Type_Length = 1 << 20,
    Type_MappingSetItem = 1 << 21,
    Type_MappingGetItem = 1 << 22,
 
    Type_EnterExit = 1 << 23,
 
    Type_Invert = 1 << 29,
    Type_RichCompare = 1 << 30,
    Type_NonZero     = 1 << 31,
 
  };

Member Function Documentation

addClassDecorators()

void PythonQt::addClassDecorators

(

QObject *

o

)

add an object whose slots will be used as decorator slots for class objects (ownership is passed to PythonQt)

The slots need to follow the following convention:

• SomeClass* new_SomeClass(...)
• QVariant new_SomeClass(...)
• void delete_SomeClass(SomeClass*)
• ... static_SomeClass_someName(...)

This will add:

• a constructor
• a constructor which generates a QVariant
• a destructor (only useful for CPP objects)
• a static decorator slot which will be available on the MetaObject (visible in PythonQt module)

addDecorators()

void PythonQt::addDecorators

(

QObject *

o

)

this will add the object both as class and instance decorator (ownership is passed to PythonQt)

addInstanceDecorators()

void PythonQt::addInstanceDecorators

(

QObject *

o

)

add an object whose slots will be used as decorator slots for other QObjects or CPP classes. The slots need to follow the convention that the first argument is a pointer to the wrapped object. (ownership is passed to PythonQt)

Example:

A slot with the signature

bool doSomething(QWidget* w, int a)

will extend QWidget instances (and derived classes) with a "bool doSomething(int a)" slot that will be called with the concrete instance as first argument. So in Python you can now e.g. call

someWidget.doSomething(12)

without QWidget really having this method. This allows to easily make normal methods of Qt classes callable by forwarding them with such decorator slots or to make CPP classes (which are not derived from QObject) callable from Python.

addObject()

void PythonQt::addObject	(	PyObject *	object,
		const QString &	name,
		QObject *	qObject
	)

add the given qObject to the python object as a variable with name (it can be removed via clearVariable)

addParentClass()

bool PythonQt::addParentClass	(	const char *	typeName,
		const char *	parentTypeName,
		int	upcastingOffset = 0
	)

add a parent class relation to the given typeName, the upcastingOffset is needed for multiple inheritance and can be calculated using PythonQtUpcastingOffset<type,parentType>(), which also verifies that type is really derived from parentType. Returns false if the typeName was not yet registered.

addPolymorphicHandler()

void PythonQt::addPolymorphicHandler	(	const char *	typeName,
		PythonQtPolymorphicHandlerCB *	cb
	)

add a handler for polymorphic downcasting

addSignalHandler() [1/2]

bool PythonQt::addSignalHandler	(	QObject *	obj,
		const char *	signal,
		PyObject *	module,
		const QString &	objectname
	)

add a signal handler to the given signal of obj and connect it to a callable objectname in module

addSignalHandler() [2/2]

bool PythonQt::addSignalHandler	(	QObject *	obj,
		const char *	signal,
		PyObject *	receiver
	)

add a signal handler to the given signal of obj and connect it to a callable receiver

addSysPath()

void PythonQt::addSysPath

(

const QString &

path

)

prepend a path to sys.path to allow importing from it

addVariable()

void PythonQt::addVariable	(	PyObject *	object,
		const QString &	name,
		const QVariant &	v
	)

add the given variable to the object

addWrapperFactory() [1/2]

void PythonQt::addWrapperFactory

(

PythonQtCppWrapperFactory *

factory

)

add the given factory to PythonQt (ownership stays with caller)

addWrapperFactory() [2/2]

void PythonQt::addWrapperFactory

(

PythonQtForeignWrapperFactory *

factory

)

add the given factory to PythonQt (ownership stays with caller)

call() [1/2]

QVariant PythonQt::call	(	PyObject *	callable,
		const QVariantList &	args = QVariantList(),
		const QVariantMap &	kwargs = QVariantMap()
	)

call the given python object, returns the result converted to a QVariant

call() [2/2]

QVariant PythonQt::call	(	PyObject *	object,
		const QString &	callable,
		const QVariantList &	args = QVariantList(),
		const QVariantMap &	kwargs = QVariantMap()
	)

call the given python callable in the scope of object, returns the result converted to a QVariant

callAndReturnPyObject()

PyObject* PythonQt::callAndReturnPyObject	(	PyObject *	callable,
		const QVariantList &	args = QVariantList(),
		const QVariantMap &	kwargs = QVariantMap()
	)

call the given python object, returns the result as new PyObject

cleanup()

static void PythonQt::cleanup ( )

static

cleanup of the singleton

clearError()

void PythonQt::clearError

(

)

reset error flag. After calling this, hadError() will return false.

See also

hadError()

clearNotFoundCachedMembers()

void PythonQt::clearNotFoundCachedMembers

(

)

clear all NotFound entries on all class infos, to ensure that newly loaded wrappers can add methods even when the object was wrapped by PythonQt before the wrapper was loaded

createModuleFromFile()

PythonQtObjectPtr PythonQt::createModuleFromFile	(	const QString &	name,
		const QString &	filename
	)

creates the new module name and evaluates the given file in the context of that module If the script is empty, the module contains no initial code. You can use evalScript/evalCode to add code to a module later on. The user needs to make sure that the name is unique in the python module dictionary.

createModuleFromScript()

PythonQtObjectPtr PythonQt::createModuleFromScript	(	const QString &	name,
		const QString &	script = QString()
	)

creates the new module name and evaluates the given script in the context of that module. If the script is empty, the module contains no initial code. You can use evalScript/evalCode to add code to a module later on. The user needs to make sure that the name is unique in the python module dictionary.

createUniqueModule()

PythonQtObjectPtr PythonQt::createUniqueModule

(

)

create a uniquely named module, you can use evalFile or evalScript to populate the module with script code

evalCode()

QVariant PythonQt::evalCode	(	PyObject *	object,
		PyObject *	pycode
	)

evaluates the given code and returns the result value (use Py_Compile etc. to create pycode from string) If pycode is NULL, a python error is printed.

evalFile()

void PythonQt::evalFile	(	PyObject *	object,
		const QString &	filename
	)

evaluates the given script code from file

evalScript() [1/2]

QVariant PythonQt::evalScript	(	const QString &	script,
		PyObject *	globals,
		PyObject *	locals,
		int	start
	)

evaluates the given script code in context of given globals and locals and returns the result value

evalScript() [2/2]

QVariant PythonQt::evalScript	(	PyObject *	object,
		const QString &	script,
		int	start = Py_file_input
	)

evaluates the given script code and returns the result value

getImporterIgnorePaths()

const QStringList& PythonQt::getImporterIgnorePaths

(

)

get paths that the importer should ignore

getMainModule()

PythonQtObjectPtr PythonQt::getMainModule

(

)

get the main module of python

getNativeVariable()

QVariant PythonQt::getNativeVariable	(	PyObject *	object,
		const QString &	name
	)

get the variable with the name of the object as QVariant of type PythonQtObjectPtr, returns an invalid QVariant on error

getReturnTypeOfWrappedMethod() [1/2]

QString PythonQt::getReturnTypeOfWrappedMethod	(	const QString &	typeName,
		const QString &	methodName
	)

returns the return type of the method methodName of a wrapped c++ type referenced by typeName

getReturnTypeOfWrappedMethod() [2/2]

QString PythonQt::getReturnTypeOfWrappedMethod	(	PyObject *	module,
		const QString &	objectname
	)

returns the return type of the method of a wrapped c++ object referenced by objectname

getVariable()

QVariant PythonQt::getVariable	(	PyObject *	object,
		const QString &	name
	)

get the variable with the name of the object, returns an invalid QVariant on error

hadError()

bool PythonQt::hadError

(

)

const

return true if handleError() has been called and an error occurred.

handleError()

bool PythonQt::handleError

(

bool

printStack = true

)

handle a python error, call this when a python function fails. If no error occurred, it returns false. The error is currently just output to the python stderr, future version might implement better trace printing

helpCalled()

PyObject* PythonQt::helpCalled

(

PythonQtClassInfo *

info

)

called by internal help methods

importInterface()

static PythonQtImportFileInterface* PythonQt::importInterface ( )

static

get access to the file importer (if set)

importModule()

PythonQtObjectPtr PythonQt::importModule

(

const QString &

name

)

import the given module and return a reference to it (useful to import e.g. "sys" and call something on it) If a module is already imported, this returns the already imported module.

init()

static void PythonQt::init ( int  flags = IgnoreSiteModule|RedirectStdOut, const QByteArray &  pythonQtModuleName = QByteArray()  )

static

initialize the python qt binding (flags are a or combination of PythonQt::InitFlags), if pythonQtModuleName is given it defines the name of the python module that PythonQt will add, otherwise "PythonQt" is used. This can be used to e.g. pass in PySide or PyQt4 to make it more compatible.

installDefaultImporter()

void PythonQt::installDefaultImporter ( )

inline

this installs the default QFile importer (which effectively does a setImporter(NULL)) (without calling setImporter or installDefaultImporter at least once, the default python import mechanism is in place) the default importer allows to import files from anywhere QFile can read from, including the Qt resource system using ":". Keep in mind that you need to extend "sys.path" with ":" to be able to import from the Qt resources.

Definition at line 539 of file PythonQt.h.

{ setImporter(nullptr); }

introspection()

QStringList PythonQt::introspection	(	PyObject *	object,
		const QString &	objectname,
		ObjectType	type
	)

read vars etc. in scope of an object, optional looking inside of an object objectname

introspectObject()

QStringList PythonQt::introspectObject	(	PyObject *	object,
		ObjectType	type
	)

read vars etc. in scope of the given object

introspectType()

QStringList PythonQt::introspectType	(	const QString &	typeName,
		ObjectType	type
	)

read vars etc. in scope of the type object called typename. First the typename of the form module.type is split into module and type. Then the module is looked up in sys.modules. If the module or type is not found there, then the type is looked up in the builtin module.

lookupCallable()

PythonQtObjectPtr PythonQt::lookupCallable	(	PyObject *	object,
		const QString &	name
	)

returns the found callable object or NULL

Returns

new reference

lookupObject()

PythonQtObjectPtr PythonQt::lookupObject	(	PyObject *	module,
		const QString &	name
	)

returns the found object or NULL

Returns

new reference

overwriteSysPath()

void PythonQt::overwriteSysPath

(

const QStringList &

paths

)

overwrite the python sys path (call this directly after PythonQt::init() if you want to change the std python sys path)

parseFile()

PythonQtObjectPtr PythonQt::parseFile

(

const QString &

filename

)

parses the given file (using PythonQt's own import mechanism) and returns the python code object, this can then be used to call evalCode()

parseFileWithPythonLoaders()

PythonQtObjectPtr PythonQt::parseFileWithPythonLoaders

(

const QString &

filename

)

Parses the given file and returns the python code object, this can then be used to call evalCode() It uses Python's importlib machinery to load the file's code and supports source and sourceless loading and generation of cache files. This method is PY3K only!

priv()

static PythonQtPrivate* PythonQt::priv ( )

inlinestatic

get access to internal data (should not be used on the public API, but is used by some C functions)

Definition at line 557 of file PythonQt.h.

{ return _self->_p; }

Referenced by PythonQtConvertListOfKnownClassToPythonList(), and PythonQtConvertPythonListToListOfKnownClass().

pythonHelpRequest

void PythonQt::pythonHelpRequest ( const QByteArray &  cppClassName )

signal

emitted when help() is called on a PythonQt object and ExternalHelp is enabled

pythonStdErr

void PythonQt::pythonStdErr ( const QString &  str )

signal

emitted when python outputs something to stderr (and redirection is turned on)

pythonStdOut

void PythonQt::pythonStdOut ( const QString &  str )

signal

emitted when python outputs something to stdout (and redirection is turned on)

qObjectMissingAttributeCallback()

static QString PythonQt::qObjectMissingAttributeCallback ( QObject *  o, const QString &  attribute  )

static

call the callback if it is set

qObjectNoLongerWrappedCB()

static void PythonQt::qObjectNoLongerWrappedCB ( QObject *  o )

static

call the callback if it is set

registerClass()

void PythonQt::registerClass	(	const QMetaObject *	metaobject,
		const char *	package = nullptr,
		PythonQtQObjectCreatorFunctionCB *	wrapperCreator = nullptr,
		PythonQtShellSetInstanceWrapperCB *	shell = nullptr
	)

registers a QObject derived class to PythonQt (this is implicitly called by addObject as well)

registerCPPClass()

void PythonQt::registerCPPClass	(	const char *	typeName,
		const char *	parentTypeName = nullptr,
		const char *	package = nullptr,
		PythonQtQObjectCreatorFunctionCB *	wrapperCreator = nullptr,
		PythonQtShellSetInstanceWrapperCB *	shell = nullptr
	)

add a wrapper object for the given QMetaType typeName, also does an addClassDecorators() to add constructors for variants (ownership of wrapper is passed to PythonQt)

Make sure that you have done a qRegisterMetaType first, if typeName is a user type!

This will add a wrapper object that is used to make calls to the given classname typeName. All slots that take a pointer to typeName as the first argument will be callable from Python on a variant object that contains such a type.

registerQObjectClassNames()

void PythonQt::registerQObjectClassNames

(

const QStringList &

names

)

as an alternative to registerClass, you can tell PythonQt the names of QObject derived classes and it will register the classes when it first sees a pointer to such a derived class

removeSignalHandler() [1/2]

bool PythonQt::removeSignalHandler	(	QObject *	obj,
		const char *	signal,
		PyObject *	module,
		const QString &	objectname
	)

remove a signal handler from the given signal of obj

removeSignalHandler() [2/2]

bool PythonQt::removeSignalHandler	(	QObject *	obj,
		const char *	signal,
		PyObject *	receiver
	)

remove a signal handler from the given signal of obj

removeSignalHandlers()

void PythonQt::removeSignalHandlers

(

)

globally removes all signal handlers (connections between QObjects and Python).

removeVariable()

void PythonQt::removeVariable	(	PyObject *	module,
		const QString &	name
	)

remove the given variable

removeWrapperFactory() [1/2]

void PythonQt::removeWrapperFactory

(

PythonQtCppWrapperFactory *

factory

)

remove the wrapper factory

removeWrapperFactory() [2/2]

void PythonQt::removeWrapperFactory

(

PythonQtForeignWrapperFactory *

factory

)

remove the wrapper factory

self()

static PythonQt* PythonQt::self ( )

static

get the singleton instance

setEnableThreadSupport()

static void PythonQt::setEnableThreadSupport ( bool  flag )

static

Enable GIL and thread state handling (turned off by default). If you want to use Python threading, you have to call this with true early in your main thread, before you launch any threads in Python. It can be called before or after PythonQt::init().

setImporter()

void PythonQt::setImporter

(

PythonQtImportFileInterface *

importInterface

)

replace the internal import implementation and use the supplied interface to load files (both py and pyc files) (this method should be called directly after initialization of init() and before calling overwriteSysPath(). On the first call to this method, it will install a generic PythonQt importer in Pythons "path_hooks". This is not reversible, so even setting setImporter(NULL) afterwards will keep the custom PythonQt importer with a QFile default import interface. Subsequent python import calls will make use of the passed importInterface which forwards all import calls to the given importInterface. Passing NULL will install a default QFile importer. (importInterface ownership stays with caller)

setImporterIgnorePaths()

void PythonQt::setImporterIgnorePaths

(

const QStringList &

paths

)

set paths that the importer should ignore

setModuleImportPath()

void PythonQt::setModuleImportPath	(	PyObject *	module,
		const QStringList &	paths
	)

sets the path list of a module to the given list (important for local imports)

setProfilingCallback()

void PythonQt::setProfilingCallback

(

ProfilingCB *

cb

)

sets a callback that is called before and after function calls for profiling

setQObjectMissingAttributeCallback()

void PythonQt::setQObjectMissingAttributeCallback

(

PythonQtQObjectMissingAttributeCB *

cb

)

set a callback that is called when a QObject does not have a specific attribute.

setQObjectNoLongerWrappedCallback()

void PythonQt::setQObjectNoLongerWrappedCallback

(

PythonQtQObjectNoLongerWrappedCB *

cb

)

set a callback that is called when a QObject with parent == NULL is no longer wrapped by PythonQt

setQObjectWrappedCallback()

void PythonQt::setQObjectWrappedCallback

(

PythonQtQObjectWrappedCB *

cb

)

set a callback that is called when a QObject with parent == NULL is wrapped by PythonQt

setRedirectStdInCallback()

void PythonQt::setRedirectStdInCallback	(	PythonQtInputChangedCB *	callback,
		void *	callbackData = nullptr
	)

Overwrite default handling of stdin using a custom callback. It internally backup the original 'sys.stdin' into 'sys.pythonqt_original_stdin'

setRedirectStdInCallbackEnabled()

void PythonQt::setRedirectStdInCallbackEnabled

(

bool

enabled

)

Enable or disable stdin custom callback. It resets 'sys.stdin' using either 'sys.pythonqt_stdin' or 'sys.pythonqt_original_stdin'

setSystemExitExceptionHandlerEnabled()

void PythonQt::setSystemExitExceptionHandlerEnabled

(

bool

value

)

if set to true, the systemExitExceptionRaised signal will be emitted if exception SystemExit is caught

See also

handleError()

systemExitExceptionHandlerEnabled()

bool PythonQt::systemExitExceptionHandlerEnabled

(

)

const

return true if SystemExit exception is handled by PythonQt

See also

setSystemExitExceptionHandlerEnabled()

systemExitExceptionRaised

void PythonQt::systemExitExceptionRaised ( int  exitCode )

signal

emitted when both custom SystemExit exception handler is enabled and a SystemExit exception is raised.

See also

setSystemExitExceptionHandlerEnabled(bool)

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The documentation for this class was generated from the following file:

• PythonQt.h