ConsoleWidget#
- class pyqtgraph.console.ConsoleWidget(parent=None, namespace=None, historyFile=None, text=None, editor=None)[source]#
Widget displaying console output and accepting command input. Implements:
eval python expressions / exec python statements
storable history of commands
exception handling allowing commands to be interpreted in the context of any level in the exception stack frame
Why not just use python in an interactive shell (or ipython) ? There are a few reasons:
pyside does not yet allow Qt event processing and interactive shell at the same time
on some systems, typing in the console _blocks_ the qt event loop until the user presses enter. This can be baffling and frustrating to users since it would appear the program has frozen.
some terminals (eg windows cmd.exe) have notoriously unfriendly interfaces
ability to add extra features like exception stack introspection
ability to have multiple interactive prompts, including for spawned sub-processes
- __init__(parent=None, namespace=None, historyFile=None, text=None, editor=None)[source]#
Arguments:
namespace
dictionary containing the initial variables present in the default namespace
historyFile
optional file for storing command history
text
initial text to display in the console window
editor
optional string for invoking code editor (called when stack trace entries are double-clicked). May contain {fileName} and {lineNum} format keys. Example:
editorCommand --loadfile {fileName} --gotoline {lineNum}