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, 3 insertions, 3 deletions

diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index 47d589d..136bcf5 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -315,7 +315,7 @@ class BuildTarget():
     def check_unknown_kwargs_int(self, kwargs, known_kwargs):
         unknowns = []
         for k in kwargs:
-            if not k in known_kwargs:
+            if k not in known_kwargs:
                 unknowns.append(k)
         if len(unknowns) > 0:
             mlog.warning('Unknown keyword argument(s) in target %s: %s.' %
@@ -347,7 +347,7 @@ class BuildTarget():
             if hasattr(s, 'held_object'):
                 s = s.held_object
             if isinstance(s, File):
-                if not s in added_sources:
+                if s not in added_sources:
                     self.sources.append(s)
                     added_sources[s] = True
             elif isinstance(s, (GeneratedList, CustomTarget)):
@@ -874,7 +874,7 @@ class Generator():
         for rule in outputs:
             if not isinstance(rule, str):
                 raise InvalidArguments('"output" may only contain strings.')
-            if not '@BASENAME@' in rule and not '@PLAINNAME@' in rule:
+            if '@BASENAME@' not in rule and '@PLAINNAME@' not in rule:
                 raise InvalidArguments('Every element of "output" must contain @BASENAME@ or @PLAINNAME@.')
             if '/' in rule or '\\' in rule:
                 raise InvalidArguments('"outputs" must not contain a directory separator.')