[MacPorts] #56821: py-flake8: add Python 3.7 support

[MacPorts]

#56821: py-flake8: add Python 3.7 support
-------------------------+-----------------------
 Reporter:  mohd-akram   |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  py-flake8
-------------------------+-----------------------


-- 
Ticket URL: <https://trac.macports.org/ticket/56821>
MacPorts <https://www.macports.org/>
Ports system for macOS