Initial Commit

Initial commit with working concept files and startup bash/.command script for running from current folder.

Author: kgolcyns

exception_viewer.py

@@ -0,0 +1,160 @@
+# Exception Test
+import sys
+import traceback
+from collections import namedtuple
+from PyQt5.QtWidgets import *
+from PyQt5.QtCore import *
+
+def connect(signal, slot):
+ signal.connect(slot)
+
+class ViewerWidget(QWidget):
+ """Viewer widget that displays exception detailed
+ information preformatted and with convience set methods.
+ 
+ Expected to show format:
+ label -> title text like: str(cls.__name__)+': '+str(err)
+ textBrowser -> shows traceback text
+ 
+ """
+ def __init__(self, parent=None):
+ super(ViewerWidget, self).__init__(parent)
+ 
+ # Declare and intilize component widgets
+ self.label = QLabel()
+ self.textBrowser = QTextBrowser()
+ 
+ # Configure component widgets
+ font = self.label.font()
+ font.setPointSize(15)
+ self.label.setFont(font)
+ self.label.setWordWrap(True)
+ 
+ # Configure layout
+ self.layout = QVBoxLayout()
+ self.layout.addWidget(self.label)
+ self.layout.addWidget(self.textBrowser)
+ self.setLayout(self.layout)
+ 
+ def setText(self, title='', body=''):
+ self.label.setText(title)
+ self.textBrowser.setText(body)
+ 
+ def clear(self):
+ """Convience method"""
+ self.setText()
+ 
+
+class ExceptionWindow(QMainWindow):
+ """Exception console to be used in Interactive Environment.
+ Used in conjunction with custom except hook in startup file,
+ where except hook calls addException to add and exception
+ to the listWidget, and user can viewer each one of these
+ in for more detail instead of traceback filling up entire
+ dam output.
+ (excepthook will print atleast exception type and error
+ in console)"""
+ ExceptionDataRole = Qt.UserRole + 1
+ ExceptionData = namedtuple('ExceptionData', ['cls', 'err', 'tb'])
+ #ExceptionClsRole = Qt.UserRole + 1
+ #ExceptionErrRole = Qt.UserRole + 2
+ #xceptionTbRole = Qt.UserRole + 3
+ 
+ def __init__(self, parent=None):
+ super(ExceptionWindow, self).__init__(parent)
+ self.setWindowTitle("Exception Console")
+ self.setUnifiedTitleAndToolBarOnMac(True)
+ 
+ # Declare and initilze component widgets
+ self.listWidget = QListWidget()
+ self.viewerWidget = ViewerWidget()
+ self.toolbar = QToolBar()
+ 
+ ## Actions
+ self.actionClear = QAction("Clear", self)
+ self.actionClear.triggered.connect(self.clearExceptions)
+ #TODO: add behavior for clear enabled/disabled handling
+ # (make another connection from currentItemChanged to handling method)
+ # (and if set based on if current item is None or not)
+ #TODO: add checkable toolbar action for always show on top
+ 
+ #TODO: fix splitter resize handling
+ #TODO: fix margin on listWidget and containter
+ #TODO: add title or placeholder label when viewer is empty
+ 
+ # Configure component widgets
+ self.toolbar.setMovable(False)
+ self.toolbar.setFloatable(False)
+ self.toolbar.addAction(self.actionClear)
+ self.addToolBar(self.toolbar)
+ ##
+ 
+ # Configure layout
+ self.splitter = QSplitter()
+ self.splitter.addWidget(self.listWidget)
+ self.splitter.addWidget(self.viewerWidget)
+ self.setCentralWidget(self.splitter)
+ 
+ # Make Connections
+ connect(self.listWidget.currentItemChanged, self.showCurrentItem)
+ 
+ # Aditional config + logic setup
+ self.tbReverse = True
+ self.counter = 1
+ 
+ def addException(self, cls, err, tb):
+ errorMessage = str(self.counter)+' '+cls+': '+err
+ exceptionData = ExceptionWindow.ExceptionData(cls, err, tb)
+ 
+ item = QListWidgetItem(errorMessage)
+ item.setData(ExceptionWindow.ExceptionDataRole, exceptionData)
+ 
+ self.listWidget.insertItem(0, item)
+ #self.listWidget.scrollToItem(item)
+ self.listWidget.setCurrentItem(item)
+ self.counter += 1 # increament after added
+ 
+ def clearExceptions(self):
+ self.listWidget.clear()
+ self.counter = 1
+ 
+ def showCurrentItem(self, current, previous):
+ if current is None:
+ # Set self.textBrowser text to '' ''
+ self.viewerWidget.clear()
+ else:
+ # Get the current item's data
+ exceptionData = current.data(ExceptionWindow.ExceptionDataRole)
+ titleText = exceptionData.cls+': '+exceptionData.err
+ tb = list(exceptionData.tb)
+ if self.tbReverse is True:
+ tb.reverse()
+ bodyText = "".join(tb)
+ 
+ # Then set the new text of the viewerWidget
+ self.viewerWidget.setText(titleText, bodyText)
+ 
+ def excepthook(self, cls, err, tb):
+ CLS = str(cls.__name__)
+ ERR = str(err)
+ TBLIST = list(traceback.format_tb(tb))
+ # print minimal error code for console
+ print('\033[91m'+CLS+'\033[0m: \033[92m'+ERR+'\033[0m')
+ 
+ self.addException(CLS, ERR, TBLIST)
+
+if __name__ == '__main__':
+ app = QApplication(sys.argv)
+ _app_ = app # save originals incase user modifies
+ exceptConsole = ExceptionWindow()
+ _exceptConsole_ = exceptConsole # save originals
+ exceptConsole.show()
+ exceptConsole.raise_()
+ 
+ sys.excepthook = exceptConsole.excepthook
+ 
+ print('Try making exceptions and testing console.')
+ print("Traceback for exceptions will appear in the 'exceptConsole'")
+ print('TODO: add clear button in console')
+ 
+

ipythonqt.command

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+#!/bin/bash
+# Runs python interactive environment with
+# PYTHONSTARTUP set to exception_viewer.py
+# for easy interactive sessions with PyQt5
+# or verbose Exception crazy libraries
+# such as Pandas.
+startupfile="exception_viewer.py"
+DIR="$(dirname "${BASH_SOURCE[0]}")"
+
+#PYTHONSTARTUP="exception_viewer.py" python -i
+PYTHONSTARTUP=$DIR/$startupfile
+echo $PYTHONSTARTUP
+PYTHONSTARTUP=$PYTHONSTARTUP pythonw -i