gistfile1.el

;; fly-make-mode for Python
;; pycheck is in ~/bin

(when (load "flymake" t)
  (defun flymake-python-init ()
    (let* ((temp-file (flymake-init-create-temp-buffer-copy
                       'flymake-create-temp-inplace))
           (local-file (file-relative-name
                        temp-file
                        (file-name-directory buffer-file-name))))
      (list "pycheck" (list local-file))))

  (setq flymake-allowed-file-name-masks '())
  (add-to-list 'flymake-allowed-file-name-masks
               '("\\.py\\'" flymake-python-init)))

(add-hook 'find-file-hook 'flymake-find-file-hook)

gistfile2.sh

#!/bin/bash
 
# epylint "$1" 2>/dev/null
pyflakes "$1"
pep8 --repeat "$1"
true