PyCharm automatically completes ignoring case

PyCharm automatically fills in and ignores case. The settings of the old version and the new version are a bit different. Here is a summary and record to prevent forgetting. The
old version is directly above. As shown in the box, select None to do the

new version (2018.2+) Yes, after the Match case is checked and removed, the case can be ignored after automatic completion, and it feels like flying