.

extensions/fablabchemnitz/import_attributes/import_attributes.inx

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+	<name>Import Attributes</name>
+	<id>fablabchemnitz.de.import_attributes</id>
+	<label>Uses lines in text file to edit attributes of elements.</label>
+	<label>Line: 'elementID,attributeName,attributeValue'.</label>
+	<label>For namespaces use {namespaceUrl}attributeName</label>	
+	<param name="data" type="path" gui-text="Data file:" mode="file" filetypes="txt,csv"/>
+	<effect>
+		<object-type>all</object-type>
+		<effects-menu>
+			<submenu name="FabLab Chemnitz">
+				<submenu name="Various"/>
+			</submenu>
+		</effects-menu>
+	</effect>
+	<script>
+		<command location="inx" interpreter="python">import_attributes.py</command>
+	</script>
+</inkscape-extension>

extensions/fablabchemnitz/import_attributes/import_attributes.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+import inkex
+import os
+import lxml
+
+class ImportAttributes(inkex.EffectExtension):
+    
+    def add_arguments(self, pars):
+        pars.add_argument("--data", default="", help="data file")
+
+    def effect(self):
+        
+        if not os.path.exists(self.options.data):
+            self.msg("The input file does not exist. Please select a proper file and try again.")
+            exit(1)
+            
+        if os.path.isdir(self.options.data):
+            self.msg("You must specify a file, not a directory!")
+            exit(1)
+            
+        with open(self.options.data, 'r') as f:
+            lines = f.read().splitlines()
+            for line in lines:
+                #split on , max 2+1 = 3 items
+                parts = line.split(",", 2)
+                if len(parts) >= 3:
+                    id = parts[0]
+                    attribute = parts[1]
+                    value = parts[2]
+                    try:
+                        node = self.svg.getElementById(id)
+                        if node is not None:
+                            try: 
+                                node.set(attribute, value)
+                            except AttributeError:
+                                inkex.utils.debug("Unknown Attribute")
+                    except AttributeError:
+                        inkex.utils.debug("element with id '" + id + "' not found in current selection.")
+                    except lxml.etree.XPathEvalError:
+                        inkex.utils.debug("invalid input file")
+                        exit(1)
+                        
+if __name__ == '__main__':
+    ImportAttributes().run()