Reorder app.py imports1.3.0

When testing locally on some systems, it appears that pylint fails on
the order of imports for `buildstream/_frontend/app.py`. This commit
changes the order of these imports.

This commit addresses issue !453.

1 files changed, 2 insertions, 3 deletions

diff --git a/buildstream/_frontend/app.py b/buildstream/_frontend/app.py
index 3cf2f5180..c8f1f435d 100644
--- a/buildstream/_frontend/app.py
+++ b/buildstream/_frontend/app.py
@@ -17,17 +17,16 @@
 #  Authors:
 #        Tristan Van Berkom <tristan.vanberkom@codethink.co.uk>
 
+from contextlib import contextmanager
 import os
 import sys
 import resource
 import traceback
 import datetime
 from textwrap import TextWrapper
-from contextlib import contextmanager
-from blessings import Terminal
-
 import click
 from click import UsageError
+from blessings import Terminal
 
 # Import buildstream public symbols
 from .. import Scope