Add function to handle loading 2 codebases.

[steven-esser]

The following lines clutter up the __init()__ function for DeltaCode:

deltacode/src/deltacode/__init__.py

Lines 61 to 70 in a095146

	if os.path.isfile(new_path) and os.path.isfile(old_path):
	self.codebase1 = VirtualCodebase(new_path)
	self.codebase2 = VirtualCodebase(old_path)
	else:
	error_message = (
	"{} is expected to be a file".format(new_path)
	if not os.path.isfile(new_path)
	else "{} is expected to be a file".format(old_path)
	)
	raise utils.FileError(error_message)

Create a function to handle this logic, including the various errors that may occur during loading.

[Pratikrocks]

Yes we could handle it likewise , changing it soon

[Pratikrocks]

Updated