Work on python wrapper

src/ifcopenshell-python/ifcopenshell/__init__.py

@@ -59,8 +59,8 @@ from .file import file
 from .entity_instance import entity_instance
 
 
-def open(fn=None):
-    return file(ifcopenshell_wrapper.open(os.path.abspath(fn))) if fn else file()
+def open(fn):
+    return file(ifcopenshell_wrapper.open(os.path.abspath(fn)))
 
 
 def create_entity(type, *args, **kwargs):

src/ifcopenshell-python/ifcopenshell/entity_instance.py

@@ -51,8 +51,8 @@ class entity_instance(object):
     >>> #423=IfcProductDefinitionShape($,$,(#409,#421))
     """
     def __init__(self, e):
-        if isinstance(e, str):
-            e = ifcopenshell_wrapper.new_IfcBaseClass(e)
+        if isinstance(e, tuple):
+            e = ifcopenshell_wrapper.new_IfcBaseClass(*e)
         super(entity_instance, self).__setattr__('wrapped_data', e)
 
     def __getattr__(self, name):

src/ifcopenshell-python/ifcopenshell/file.py

@@ -55,11 +55,16 @@ class file(object):
     print(products[0] == ifc_file[122] == ifc_file['2XQ$n5SLP5MBLyL442paFx'])
     >>> True
     """
-    def __init__(self, f=None):
-        self.wrapped_data = f or ifcopenshell_wrapper.file()
+    def __init__(self, f=None, schema=None):
+        if f is not None:
+            self.wrapped_data = f
+        else:
+            args = filter(None, [schema])
+            args = map(ifcopenshell_wrapper.schema_by_name, args)
+            self.wrapped_data = ifcopenshell_wrapper.file(*args)
 
     def create_entity(self, type, *args, **kwargs):
-        e = entity_instance(type)
+        e = entity_instance((self.schema, type))
         self.wrapped_data.add(e.wrapped_data)
         e.wrapped_data.this.disown()
         attrs = list(enumerate(args)) + \

src/ifcopenshell-python/ifcopenshell/main.py

@@ -24,6 +24,4 @@ from __future__ import print_function
 from . import ifcopenshell_wrapper
 
 version = ifcopenshell_wrapper.version()
-schema_identifier = ifcopenshell_wrapper.schema_identifier()
-get_supertype = ifcopenshell_wrapper.get_supertype
 get_log = ifcopenshell_wrapper.get_log