Add python_requires to help pip (#529)
Add python_requires to help pip (#529)

Signed-off-by: Hugo <5a499df1e6a266942706a9de3d4c03795108f8e3@users.noreply.github.com>
Signed-off-by: Hugo van Kemenade <5a499df1e6a266942706a9de3d4c03795108f8e3@users.noreply.github.com>
prometheus/client_python