1 files changed, 34 insertions, 34 deletions
diff --git a/io_export_dxf/model/model.py b/io_export_dxf/model/model.py
index 54e12f3a..698f5102 100644
--- a/io_export_dxf/model/model.py
+++ b/io_export_dxf/model/model.py
@@ -1,36 +1,36 @@
 
 class DxfDrawing(object):
-	"""
-	Represents intermediate model of DXF drawing. It is useful in iterating
-	through exported object and for easy change the DXF handling library.
-	"""
-	def __init__(self):
-		self._entities = {}
-		self._layers = {}
-		self._views = []
-		self._vports = []
-		self._blocks = []
-
-	def isEmpty(self):
-		return len(self._entities) == 0
-
-	def addEntity(self, type, **kwargs):
-		if type not in self._entities:
-			self._entities[type] = []
-		self._entities[type].append(kwargs)
-
-	def addLayer(self, name, color):
-		self._layers[name] = color
-
-	def containsLayer(self, name):
-		return name in self._layers
-
-	def addBlock(self, block):
-		self._blocks.append(block)
-
-	def containsBlock(self, blockname):
-		return blockname in self._blocks
-
-	def convert(self, **kwargs):
-		""" Converts this drawing into DXF representation object """
-		raise NotImplementedError()
+    """
+    Represents intermediate model of DXF drawing. It is useful in iterating
+    through exported object and for easy change the DXF handling library.
+    """
+    def __init__(self):
+        self._entities = {}
+        self._layers = {}
+        self._views = []
+        self._vports = []
+        self._blocks = []
+
+    def isEmpty(self):
+        return len(self._entities) == 0
+
+    def addEntity(self, type, **kwargs):
+        if type not in self._entities:
+            self._entities[type] = []
+        self._entities[type].append(kwargs)
+
+    def addLayer(self, name, color):
+        self._layers[name] = color
+
+    def containsLayer(self, name):
+        return name in self._layers
+
+    def addBlock(self, block):
+        self._blocks.append(block)
+
+    def containsBlock(self, blockname):
+        return blockname in self._blocks
+
+    def convert(self, **kwargs):
+        """ Converts this drawing into DXF representation object """
+        raise NotImplementedError()