python: functions i.

pyfunc.py

def upload_to_rename(instance, filename):
	# handle instance and filename
	return "sample"

def build_concat(basepath, f):
	def _ret(instance, filename):
		return basepath + f(instance, filename)
	return _ret


foo = build_concat("some/base/path/", upload_to_rename)

foo(None, None) # returns 'some/base/path/sample'