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+**IF YOU HAVE SOME TROUBLE, IT'S MAY NOT ISSUE OF THIS PROJECT. GO STACKOVERFLOW!!!**
+
+If you failed to build, go Stackoverflow.
+If you failed to install, go Stackoverflow.
+If you failed to connect to database, go Stackoverflow.
+
+FYI, MySQL Connector/C 6.1.10 has bug. see https://github.com/PyMySQL/mysqlclient-python/issues/169#issuecomment-299778504
+
+Only when If you're sure it's PyMySQL's issue, report the complete steps to reproduce, from creating database.
+
+I don't have time to investigate your issue from an incomplete code snippet.
+
+See also: https://medium.com/@methane/why-you-must-not-ask-questions-on-github-issues-51d741d83fde