tree-wide: use proper 'not in' notation

Let's be more pythonic and 'not is' seems really weird.

Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/mesonbuild/modules/gnome.py b/mesonbuild/modules/gnome.py
index 3a991e9..b093dd5 100644
--- a/mesonbuild/modules/gnome.py
+++ b/mesonbuild/modules/gnome.py
@@ -639,7 +639,7 @@ can not be used with the current version of glib-compiled-resources, due to
         modulename = args[0]
         if not isinstance(modulename, str):
             raise MesonException('Gtkdoc arg must be string.')
-        if not 'src_dir' in kwargs:
+        if 'src_dir' not in kwargs:
             raise MesonException('Keyword argument src_dir missing.')
         main_file = kwargs.get('main_sgml', '')
         if not isinstance(main_file, str):
@@ -657,7 +657,7 @@ can not be used with the current version of glib-compiled-resources, due to
         namespace = kwargs.get('namespace', '')
         mode = kwargs.get('mode', 'auto')
         VALID_MODES = ('xml', 'sgml', 'none', 'auto')
-        if not mode in VALID_MODES:
+        if mode not in VALID_MODES:
             raise MesonException('gtkdoc: Mode {} is not a valid mode: {}'.format(mode, VALID_MODES))
 
         src_dirs = kwargs['src_dir']