def __init__(self, initialFilename=None):
JESProgram.activeInstance = self
self.startupTimeSec = 0
# Install all the plugins
self.pluginData = PluginData()
self.pluginInstaller = PluginInstaller(self.pluginData)
# Set up the interpreter
self.interpreter = terp = Interpreter()
self.debugger = terp.debugger
self.watcher = Watcher(self.debugger)
addInterpreterActions(terp)
terp.initialize(self.initializeInterpreter)
self.varsToHighlight = list(terp.initialNames)
# Install the file manager.
self.fileManager = FileManager()
self.setupGUI(initialFilename)
# Open the first Python prompt!
self.replBuffer.startStatement()
