pymysql.err.InternalError: Packet sequence number wrong - got 45 expected 0
Solution 1:
I think the reason was that you using multithread to connect to mysql at one time, the mysql server return the wrong response here.
Solution 2:
Okay, I figured it out.
I just needed to remove
cursorclass=pymysql.cursors.DictCursor
and now it works :)
Thanks everyone!