SW-609: Replace old types

SAS/ResourceAssignment/Common/lib/specification.py

@@ -33,7 +33,6 @@ from datetime import datetime, timedelta
 from lofar.common.datetimeutils import parseDatetime
 from lofar.sas.resourceassignment.resourceassigner.schedulechecker import movePipelineAfterItsPredecessors
 import pprint
-from types import IntType, FloatType, StringTypes
 
 
 """ Prefix that is common to all parset keys, when we get a parset from OTDBRPC. """
@@ -107,9 +106,9 @@ class Specification:
             return timedelta(0)
         elif input_value == "None":
             return timedelta(0)
-        elif isinstance(input_value, IntType):
+        elif isinstance(input_value, int):
             return timedelta(seconds=input_value)
-        elif isinstance(input_value, FloatType):
+        elif isinstance(input_value, float):
             return timedelta(seconds=input_value)
         else:
             return input_value  # todo: maybe raise an Exception instead?
@@ -124,7 +123,7 @@ class Specification:
             return None
         elif input_value == "None":
             return None
-        elif isinstance(input_value, StringTypes):
+        elif isinstance(input_value, str):
             return parseDatetime(input_value)
         else:
             return input_value # todo: maybe raise an Exception instead?