fpppy.utils.plot_series errors on "matplotlib>=3.11"

[autorejecttop]

Tried running the plot_series function based on the code at Chapter 2.2 Time Plots but got this error:

AttributeError                            Traceback (most recent call last)
Cell In[25], [line 1](vscode-notebook-cell:?execution_count=25&line=1)
----> [1](vscode-notebook-cell:?execution_count=25&line=1) plot_series(
      2     df=melsyd_economy,
      3     id_col='unique_id',
      4     time_col='ds',

File ~/dev/Forecasting-Principles-and-Practice_the-Pythonic-Way/.venv/lib/python3.13/site-packages/fpppy/utils.py:40, in plot_series(*args, **kwargs)
     36     handles, labels = fig.axes[0].get_legend_handles_labels()
     37     fig.legend(
     38         handles, labels, loc="upper right", bbox_to_anchor=(1, 1), frameon=False
     39     )
---> [40](https://file+.vscode-resource.vscode-cdn.net/home/autorejecttop/dev/Forecasting-Principles-and-Practice_the-Pythonic-Way/~/dev/Forecasting-Principles-and-Practice_the-Pythonic-Way/.venv/lib/python3.13/site-packages/fpppy/utils.py:40) fig.show()
     41 return fig

File ~/dev/Forecasting-Principles-and-Practice_the-Pythonic-Way/.venv/lib/python3.13/site-packages/matplotlib/figure.py:2804, in Figure.show(self, warn)
   2770 """
   2771 If using a GUI backend with pyplot, display the figure window.
   2772 
   (...)   2801 
   2802 """
   2803 if self.canvas.manager is None:
-> [2804](https://file+.vscode-resource.vscode-cdn.net/home/autorejecttop/dev/Forecasting-Principles-and-Practice_the-Pythonic-Way/~/dev/Forecasting-Principles-and-Practice_the-Pythonic-Way/.venv/lib/python3.13/site-packages/matplotlib/figure.py:2804)     raise AttributeError(
   2805         "Figure.show works only for figures managed by pyplot, "
   2806         "normally created by pyplot.figure()")
   2807 try:
   2808     self.canvas.manager.show()

AttributeError: Figure.show works only for figures managed by pyplot, normally created by pyplot.figure()

Installing matplotlib<=3.10 made it work.

Also, removing the fig.show() right before return fig on the plot_series function made it work in matplotlib>=3.11.

[robjhyndman]

Thanks. Now fixed. We've also added a conda environment to ensure package versions installed match what we use in the book. See https://otexts.com/fpppy/UsingPython.html#install-required-libraries