0435d914d8cf8be2147af722e39310487f03ce8c,pandas/tests/plotting/test_frame.py,TestDataFramePlots,test_mpl2_color_cycle_str,#TestDataFramePlots#,171

Before Change

    def test_mpl2_color_cycle_str(self):
        // GH 15516
        colors = ["C" + str(x) for x in range(10)]
        df = DataFrame(randn(10, 3), columns=["a", "b", "c"])
        for c in colors:
            _check_plot_works(df.plot, color=c)

After Change

    def test_mpl2_color_cycle_str(self):
        // GH 15516
        df = DataFrame(randn(10, 3), columns=["a", "b", "c"])
        colors = ["C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9"]
        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter("always", "MatplotlibDeprecationWarning")

            for color in colors:
                _check_plot_works(df.plot, color=color)

            // if warning is raised, check that it is the exact problematic one
            // GH 36972
            if w:
                match = "Support for uppercase single-letter colors is deprecated"
                warning_message = str(w[0].message)
                msg = "MatplotlibDeprecationWarning related to CN colors was raised"

Instances