ui: clean up asyncio calls

Bump python dependency to 3.7, which added create_task().

2 files changed, 7 insertions, 11 deletions

diff --git a/alot/ui.py b/alot/ui.py
index 550ca150..b8bcae5f 100644
--- a/alot/ui.py
+++ b/alot/ui.py
@@ -259,8 +259,7 @@ class UI:
                 clear()
                 logging.debug("cmdline: '%s'", cmdline)
                 if not self._locked:
-                    loop = asyncio.get_event_loop()
-                    loop.create_task(_apply_fire(cmdline))
+                    self._loop.create_task(_apply_fire(cmdline))
                 # move keys are always passed
                 elif cmdline in ['move up', 'move down', 'move page up',
                                  'move page down']:
@@ -378,7 +377,7 @@ class UI:
         """
         history = history or []
 
-        fut = asyncio.get_event_loop().create_future()
+        fut = self._loop.create_future()
         oldroot = self.mainloop.widget
 
         def select_or_cancel(text):
@@ -424,15 +423,13 @@ class UI:
         self._passall = True
         return fut
 
-    @staticmethod
-    def exit():
+    def exit(self):
         """
         shuts down user interface without cleaning up.
         Use a :class:`alot.commands.globals.ExitCommand` for a clean shutdown.
         """
         try:
-            loop = asyncio.get_event_loop()
-            loop.stop()
+            self._loop.stop()
         except Exception as e:
             logging.error('Could not stop loop: %s\nShutting down anyway..',
                           str(e))
@@ -586,7 +583,7 @@ class UI:
         assert cancel is None or cancel in choices.values()
         assert msg_position in ['left', 'above']
 
-        fut = asyncio.get_event_loop().create_future()  # Create a returned future
+        fut = self._loop.create_future()
         oldroot = self.mainloop.widget
 
         def select_or_cancel(text):
@@ -745,7 +742,7 @@ class UI:
         # it is a SIGINT ?
         if signum == signal.SIGINT:
             logging.info('shut down cleanly')
-            asyncio.ensure_future(self.apply_command(globals.ExitCommand()))
+            asyncio.create_task(self.apply_command(globals.ExitCommand()))
         elif signum == signal.SIGUSR1:
             if isinstance(self.current_buffer, SearchBuffer):
                 self.current_buffer.rebuild()
diff --git a/setup.py b/setup.py
index fbeb79f5..56b9f894 100755
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,6 @@ setup(
             'License :: OSI Approved'
             ':: GNU General Public License v3 or later (GPLv3+)'),
         'Operating System :: POSIX',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3 :: Only',
         'Topic :: Communications :: Email :: Email Clients (MUA)',
@@ -53,5 +52,5 @@ setup(
     ],
     provides=['alot'],
     test_suite="tests",
-    python_requires=">=3.6",
+    python_requires=">=3.7",
 )