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"""
ConsoleWidget is used to allow execution of user-supplied python commands
in an application. It also includes a command history and functionality for trapping
and inspecting stack traces.
"""
import numpy as np
import pyqtgraph as pg
import pyqtgraph.console
app = pg.mkQApp()
## build an initial namespace for console commands to be executed in (this is optional;
## the user can always import these modules manually)
namespace = {'pg': pg, 'np': np}
## initial text to display in the console
text = """
This is an interactive python console. The numpy and pyqtgraph modules have already been imported
as 'np' and 'pg'.
Go, play.
"""
c = pyqtgraph.console.ConsoleWidget(namespace=namespace, text=text)
c.show()
c.setWindowTitle('pyqtgraph example: ConsoleWidget')
if __name__ == '__main__':
pg.exec()
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