debianを使う。 pythonmysqlを使うのに必要というので、

$ sudo apt-get install libmysqlclient-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libmysqlclient-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libmysqlclient-dev' has no installation candidate


sudo apt-get install default-libmysqlclient-dev