factor reading of configuration file

eoptasks.py

@@ -59,10 +59,15 @@ class Server:
         return '<Server %s %r>' % (self.name, self.keywords)
 
 
-def get_servers():
-    servers = []
+def get_config():
     config = configparser.ConfigParser()
     config.read(os.path.join(os.path.expanduser('~/.config/eoptasks.ini')))
+    return config
+
+
+def get_servers():
+    servers = []
+    config = get_config()
     serversfile = config.get('config', 'servers', fallback=None)
     if serversfile is None:
         print(
@@ -244,8 +249,7 @@ def get_commands():
         # puppet.update, unfortunately without proper error checking.
         'puppet.update': '''sudo puppet agent -t || true''',
     }
-    config = configparser.ConfigParser()
-    config.read(os.path.join(os.path.expanduser('~/.config/eoptasks.ini')))
+    config = get_config()
     for section in config.sections():
         if section.startswith('command:'):
             commands[section[len('command:') :]] = config.get(section, 'cmd')