Asserting function called from pylab

I have to write some tests to assert certain functions are called, such as the plot function from matplotlib.pyplot. Here's the code I have so far:

def test_plot_call(self):
    with patch("matplotlib.pyplot.plot") as plot_call:
        import attempt
        plot_call.assert_has_calls([call(attempt.X,attempt.Y1)])

This is to test that matplotlib.pyplot.plot has been called in a certain way from a module called attempt.

This works fine if the function is called as matplotlib.pyplot.plot(X,Y1), but I need it to also work when the attempt module has called plot like this:

from pylab import *
X = # somethin
Y1 = # somethin

plot(X,Y1)

This causes test_plot_call to fail, but I need it to pass.