python: make logging import conditional in case time is not built

src/ifcopenshell-python/ifcopenshell/entity_instance.py

@@ -19,12 +19,16 @@
 
 import functools
 import numbers
-import logging
 import itertools
 
 from . import ifcopenshell_wrapper
 
-log = logging.getLogger(__name__)
+try:
+    import logging
+    log = logging.getLogger(__name__)
+except ImportError as e:
+    log = type('logger', (object,), {'exception': lambda s: print(s)})
+
 
 class entity_instance(object):
     def __init__(self, e):