Add isort pre-commit hook

Sort import statement in python files

See https://github.com/PyCQA/isort

python_apps/pypo/liquidsoap/__main__.py

@@ -1,12 +1,14 @@
 """ Runs Airtime liquidsoap
 """
 import argparse
-import os
-from . import generate_liquidsoap_cfg
 import logging
+import os
 import subprocess
+
 from pypo import pure
 
+from . import generate_liquidsoap_cfg
+
 PYPO_HOME = "/var/tmp/airtime/pypo/"
 
 

python_apps/pypo/liquidsoap/generate_liquidsoap_cfg.py

@@ -3,6 +3,7 @@ import os
 import sys
 import time
 import traceback
+
 from api_clients.version1 import AirtimeApiClient
 
 

python_apps/pypo/liquidsoap/liquidsoap_auth.py

@@ -1,6 +1,7 @@
-from api_clients import version1 as api_client
 import sys
 
+from api_clients import version1 as api_client
+
 api_clients = api_client.AirtimeApiClient()
 
 dj_type = sys.argv[1]

python_apps/pypo/liquidsoap/liquidsoap_prepare_terminate.py

@@ -1,6 +1,7 @@
-from configobj import ConfigObj
-import telnetlib
 import sys
+import telnetlib
+
+from configobj import ConfigObj
 
 try:
     config = ConfigObj("/etc/airtime/airtime.conf")