Added linting scripts

setup.cfg

@@ -4,11 +4,11 @@ description-file = README.md
 [isort]
 force_single_line=True
 known_first_party=aeropath
-line_length=80
+line_length=160
 profile=black
 
 [flake8]
 # imported but unused in __init__.py, that's ok.
 per-file-ignores=*__init__.py:F401
 ignore=E203,W503,W605,F632,E266,E731,E712,E741
-max-line-length=80
+max-line-length=160

shell/format.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+isort --sl demo/src/ demo/app.py
+black --line-length 80 demo/src/ demo/app.py
+flake8 demo/src/ demo/app.py

shell/lint.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+isort --check --sl -c demo/src/ demo/app.py
+if ! [ $? -eq 0 ]
+then
+  echo "Please run \"sh shell/format.sh\" to format the code."
+  exit 1
+fi
+echo "no issues with isort"
+flake8 demo/src/ demo/app.py
+if ! [ $? -eq 0 ]
+then
+  echo "Please fix the code style issue."
+  exit 1
+fi
+echo "no issues with flake8"
+black --check --line-length 80 demo/src/ demo/app.py
+if ! [ $? -eq 0 ]
+then
+  echo "Please run \"sh shell/format.sh\" to format the code."
+    exit 1
+fi
+echo "no issues with black"
+echo "linting success!"