やり方
複数行の場合は複数行選択してから
右にずらす
tab
左にずらす
shift
+ tab
検証環境
PyCharm 2021.1.1 (Professional Edition)
Build #PY-211.7142.13, built on April 21, 2021
Licensed to XXXXXXXXX / xxxxxxxxxxxxxx
You have a perpetual fallback license for this version.
Subscription is active until XXXXXXXXXXXXX.
Runtime version: 11.0.10+9-b1341.41 amd64
VM: Dynamic Code Evolution 64-Bit Server VM by JetBrains s.r.o.
Linux 5.8.0-55-generic
GC: G1 Young Generation, G1 Old Generation
Memory: 2048M
Cores: 16
Non-Bundled Plugins: org.jetbrains.plugins.vue (211.7142.13)
Current Desktop: ubuntu:GNOME