"""

A basic example that show you how to create a basic python code editor widget,

from scratch.

Editor features:

- syntax highlighting

- code completion (using jedi)

- code folding

- auto indentation

- auto complete

- comments mode (ctrl+/)

- calltips mode

- linters (pyflakes and pep8) modes + display panel

- line number panel

- builtin search and replace panel

"""

import logging

logging.basicConfig()

# optionally, set the qt api to use (in ['pyqt4', 'pyqt5', 'pyside'])

# import os; os.environ['QT_API'] = 'pyside'

import sys

from pyqode.qt import QtWidgets

from pyqode.python.backend import server

from pyqode.core import api, modes, panels

from pyqode.python import modes as pymodes, panels as pypanels, widgets

from pyqode.python.folding import PythonFoldDetector

from pyqode.python.backend.workers import defined_names

class MyPythonCodeEdit(widgets.PyCodeEditBase):

def __init__(self):

super(MyPythonCodeEdit, self).__init__()

# starts the default pyqode.python server (which enable the jedi code

# completion worker).

self.backend.start(server.__file__)

# some other modes/panels require the analyser mode, the best is to

# install it first

self.modes.append(modes.OutlineMode(defined_names))

#--- core panels

self.panels.append(panels.FoldingPanel())

self.panels.append(panels.LineNumberPanel())

self.panels.append(panels.CheckerPanel())

self.panels.append(panels.SearchAndReplacePanel(),

panels.SearchAndReplacePanel.Position.BOTTOM)

self.panels.append(panels.EncodingPanel(), api.Panel.Position.TOP)

# add a context menu separator between editor's

# builtin action and the python specific actions

self.add_separator()

#--- python specific panels

self.panels.append(pypanels.QuickDocPanel(), api.Panel.Position.BOTTOM)

#--- core modes

self.modes.append(modes.CaretLineHighlighterMode())

self.modes.append(modes.CodeCompletionMode())

self.modes.append(modes.ExtendedSelectionMode())

self.modes.append(modes.FileWatcherMode())

self.modes.append(modes.OccurrencesHighlighterMode())

self.modes.append(modes.RightMarginMode())

self.modes.append(modes.SmartBackSpaceMode())

self.modes.append(modes.SymbolMatcherMode())

self.modes.append(modes.ZoomMode())

#--- python specific modes

self.modes.append(pymodes.CommentsMode())

self.modes.append(pymodes.CalltipsMode())

self.modes.append(pymodes.PyFlakesChecker())

self.modes.append(pymodes.PEP8CheckerMode())

self.modes.append(pymodes.PyAutoCompleteMode())

self.modes.append(pymodes.PyAutoIndentMode())

self.modes.append(pymodes.PyIndenterMode())

self.modes.append(pymodes.PythonSH(self.document()))

self.syntax_highlighter.fold_detector = PythonFoldDetector()

app = QtWidgets.QApplication(sys.argv)

window = QtWidgets.QMainWindow()

editor = MyPythonCodeEdit()

editor.file.open(__file__)

window.setCentralWidget(editor)

window.show()

app.exec_()

editor.close()