glb module

Developers can access global shell and main window from this module.

Shell

class lys.glb.shell.ExtendShell

Bases: QObject

Extended shell object that is used for Python Interface in lys.

This object is basically used to realize custom functionarities of lys from plugins.

Any expression can be executed and evaluated by exec() and eval() functions. Any object can be added by addObject()

ExtendShell is basically singleton object. Developers should access the instance of ExtendShell from glb.shell() function.

Example:

from lys import glb

shell = glb.shell()          # The global shell instance
shell.exec("a=1")            # Execute a command
print(shell.eval("a"))       # 1, Evaluate a expression

f = lambda: print("hello")
shell.addObject(f, name = "sayHello")  # Adding new function in lys Python Interface.
sayHello()                             # hello

addObject(obj, name=None, printResult=True)

Add an object to shell.

name represents name of object on shell. If None, obj.__name__ and obj.name is used as a name. If both methods are not defined, object is loaded as default name “obj”.

To avoid overlap, name is automatically changed.

Parameters

• obj (any) – object to be loaded

• name (str) – name of object

• printResult (bool) – If True, message is printed after loading.

Retruns:

str: The name of the object added.

Example:

from lys import glb
name = glb.shell().addObject("test", name="a")
instance = eval(name)   # Since the name may be changed from 'a' to avoid conflict.
print(instance)         # test

commandExecuted

commandExecuted signal is emitted after when eval() and exec() is called.

property commandLog

List of command log that is executed by user.

Returns

List of commands

Return type

list

property dict

Global dictionary of shell.

This is useful when developers want to access local variables in Python Interface.

It is recommended to use addObject() to add an object in shell.

Returns

Global dictionary of shell

Return type

dict

eval(expr, save=False)

Evaluate expression in shell.

Parameters

• expr (str) – expression to be evaluated

• save (bool) – if True, expr is added to command log.

Returns

Result

Return type

Any

exec(expr, save=False)

Execute expression in shell.

Parameters

• expr (str) – expression to be executed

• save (bool) – if True, expr is added to command log.

importAll(module)

Import module

This function import module, i.e. from module import * is called.

If the module has been imported, it is reloaded by importlib.

Parameters

module (str) – module to be loaded.

Example:

from lys import glb
glb.shell().importAll("time")
print(time())

importModule(module)

Import module

This function import module, i.e. import module is called.

If the module has been imported, it is reloaded by importlib.

Parameters

module (str) – module to be loaded.

Example:

from lys import glb
glb.shell().importModule("time")
print(time.time())

refresh()

Refresh all modules in module directory.

Main Window

class lys.glb.MainWindow.MainWindow(show=True, restore=False)

Bases: QMainWindow

Main window class gives several methods to customize lys GUI.

Tabs can be customized by tabWidget() method.

Developers can access lys.widgets.fileView.FileSystemView by fileView property.

Do not instanciate this class because it is automatically done by lys.

beforeClosed

beforeClosed(event) signal is emitted when close button of lys is clicked.

Developers can connect any functions/methods to this signal.

If the main window should not be closed, call event.ignore() in the connected functions/methods.

Example:

from lys import glb
glb.mainWindow().beforeClosed.connect(lambda event: print("Main window closed."))

closeAllGraphs(workspace=None)

Close all graphs in the workspace.

Parameters

workspace (str) – The name of the workspace to close all graphs. If it is None, present workspace is selected.

closeEvent(event)

Reimplementation of closeEvent in QMainWindow.closeEvent for realization of beforeClosed and closed signals.

closed

closed(event) signal is emitted when main window of lys is closed.

Example:

from lys import glb
glb.mainWindow().closed.connect(lambda: print("Main window closed."))

property fileView

Returns lys.widgets.fileView.FileSystemView object in main window.

Developers can get selected paths and add new context menu in FileSystemView.

See lys.widgets.fileView.FileSystemView for detail.

tabWidget(position)

Get tab widget that is located at the right and bottom of the main window.

Parameters

position ('right' or 'bottom') –

Returns

The tab widget.

Return type

QTabWidget