Cleanup deprecation warnings for etree.Element comparisons in TMX parser

Author: Cleptomania

pytiled_parser/parsers/tmx/tiled_map.py

@@ -133,7 +133,7 @@ def parse(file: Path) -> TiledMap:
         map_.hex_side_length = int(raw_map.attrib["hexsidelength"])
 
     properties_element = raw_map.find("./properties")
-    if properties_element:
+    if properties_element is not None:
         map_.properties = parse_properties(properties_element)
 
     if raw_map.attrib.get("staggeraxis") is not None:

pytiled_parser/parsers/tmx/tiled_object.py

@@ -55,7 +55,7 @@ def _parse_common(raw_object: etree.Element) -> TiledObject:
         common.class_ = raw_object.attrib["class"]
 
     properties_element = raw_object.find("./properties")
-    if properties_element:
+    if properties_element is not None:
         common.properties = parse_properties(properties_element)
 
     return common

pytiled_parser/parsers/tmx/wang_set.py

@@ -38,7 +38,7 @@ def _parse_wang_color(raw_wang_color: etree.Element) -> WangColor:
         wang_color.class_ = raw_wang_color.attrib["class"]
 
     properties = raw_wang_color.find("./properties")
-    if properties:
+    if properties is not None:
         wang_color.properties = parse_properties(properties)
 
     return wang_color
@@ -74,7 +74,7 @@ def parse(raw_wangset: etree.Element) -> WangSet:
         wangset.class_ = raw_wangset.attrib["class"]
 
     properties = raw_wangset.find("./properties")
-    if properties:
+    if properties is not None:
         wangset.properties = parse_properties(properties)
 
     return wangset