fab: add cleanup function

fixes #340

circle/fabfile.py

@@ -107,6 +107,7 @@ def update_portal(test=False):
     "Update and restart portal+manager"
     with _stopped("portal", "manager"):
         pull()
+        cleanup()
         pip("circle", "~/circle/requirements.txt")
         migrate()
         compile_things()
@@ -126,10 +127,15 @@ def update_node():
     with _stopped("node", "agentdriver", "monitor-client"):
         pull("~/vmdriver")
         pip("vmdriver", "~/vmdriver/requirements/production.txt")
+        _cleanup("~/vmdriver")
+
         pull("~/agentdriver")
         pip("agentdriver", "~/agentdriver/requirements.txt")
+        _cleanup("~/agentdriver")
+
         pull("~/monitor-client")
         pip("monitor-client", "~/monitor-client/requirements.txt")
+        _cleanup("~/monitor-client")
 
 
 @parallel
@@ -151,6 +157,18 @@ def checkout(vmdriver="master", agent="master"):
         run("git checkout %s" % agent)
 
 
+@roles('portal')
+def cleanup():
+    "Clean pyc files of portal"
+    _cleanup()
+
+
+def _cleanup(dir="~/circle/circle"):
+    "Clean pyc files"
+    with cd("~/circle/circle"):
+        run("find -name '*.py[co]' -exec rm -f {} +")
+
+
 def _stop_services(*services):
     "Stop given services (warn only if not running)"
     with settings(warn_only=True):