[doc/thgttg] Update create example file code

Author: mpsonntag

doc/example_odMLs/thgttg.py

@@ -7,18 +7,22 @@
 @author: zehl
 """
 
+import datetime
+import os
+import odml
 import sys
+
+
 if len(sys.argv) != 2:
-	print("You have to provide the absolute path to the odml-python module ", 
-	      "your command line.")
-else:
-	odml_pythonpath = sys.argv[-1]
-sys.path.append(odml_pythonpath)
+    print("Please provide an existing directory for the example odml file.")
+    quit()
 
-import os
-import odml
-import datetime
+output_directory = sys.argv[-1]
+if not os.path.isdir(output_directory):
+    print("Please provide an existing directory for the example odml file.")
+    quit()
 
+save_to = os.path.join(output_directory, "THGTTG.odml")
 
 odmlrepo = 'http://portal.g-node.org/odml/terminologies/v1.0/terminologies.xml'
 
@@ -304,7 +308,5 @@
                             dtype=odml.DType.string,
                             definition="Manufacturer of robots"))
 
-save_to = os.path.join(odml_pythonpath, "doc", "example_odMLs", "THGTTG.odml")
-
 odml.save(doc, save_to)