Backport PR #21501 on branch v3.5.x (Refix for pyparsing compat.)#21633

timhoffm merged 1 commit intomatplotlib:v3.5.xmatplotlib/matplotlib:v3.5.xfrom

meeseeksmachine:auto-backport-of-pr-21501-on-v3.5.xmeeseeksmachine/matplotlib:auto-backport-of-pr-21501-on-v3.5.xCopy head branch name to clipboard