[processing] Avoid more deprecation warnings from external libraries

nyalldawson · nyalldawson · commit 3f71df61d46c · 2019-03-07T12:02:43.000+10:00
(cherry picked from commit 2ff0d59)
diff --git a/python/plugins/processing/algs/help/__init__.py b/python/plugins/processing/algs/help/__init__.py
@@ -25,7 +25,11 @@
 
 import os
 import codecs
-import yaml
+import warnings
+with warnings.catch_warnings():
+    warnings.filterwarnings("ignore", category=DeprecationWarning)
+    import yaml
+
 from qgis.core import QgsSettings, Qgis
 from qgis.PyQt.QtCore import QLocale, QCoreApplication
 
@@ -37,10 +41,12 @@ def loadShortHelp():
         if f.endswith("yaml"):
             filename = os.path.join(path, f)
             with codecs.open(filename, encoding='utf-8') as stream:
-                for k, v in yaml.load(stream).items():
-                    if v is None:
-                        continue
-                    h[k] = QCoreApplication.translate("{}Algorithm".format(f[:-5].upper()), v)
+                with warnings.catch_warnings():
+                    warnings.filterwarnings("ignore", category=DeprecationWarning)
+                    for k, v in yaml.load(stream).items():
+                        if v is None:
+                            continue
+                        h[k] = QCoreApplication.translate("{}Algorithm".format(f[:-5].upper()), v)
 
     version = ".".join(Qgis.QGIS_VERSION.split(".")[0:2])
     overrideLocale = QgsSettings().value('locale/overrideFlag', False, bool)
