PR summary

This fixes a small bug with handling integer font weights when rendering text in SVGs as elements vs paths (i.e. plt.rcParams['svg.fonttype'] = 'none').

To reproduce:

plt.rcParams['svg.fonttype'] = 'none'
fig, ax = plt.subplots()
ax.set_title('bold-title', fontweight=600)

Raises:

KeyError: 600
lib/matplotlib/backends/backend_svg.py:1138: KeyError

The problem is that the font weight_dict is keyed on the string values, but get_weight returns an integer.

PR checklist

I couldn't find an open issue for this, but let me know if one exists already. This is also my first PR to matplotlib, so let me know if there's anything I missed in your contribution process. Appreciate any feedback! And, thanks so much for maintaining this library! It's the backbone of Starplot, a sky mapping library I maintain.

• "closes #0000" is in the body of the PR description to link the related issue
• new and changed code is tested
• Plotting related features are demonstrated in an example
• New Features and API Changes are noted with a directive and release note
• Documentation complies with general and docstring guidelines