type check for Integral, bool by value (#675)

dill/logger.py

@@ -253,7 +253,7 @@ def trace(arg: Union[bool, TextIO, str, os.PathLike] = None, *, mode: str = 'a')
         arg: a boolean value, or an optional file-like or path-like object for the context manager
         mode: mode string for ``open()`` if a file name is passed as the first argument
     """
-    if not isinstance(arg, bool):
+    if repr(arg) not in ('False', 'True'):
         return TraceManager(file=arg, mode=mode)
     logger.setLevel(logging.INFO if arg else logging.WARNING)
 

dill/source.py

@@ -481,7 +481,8 @@ def _isstring(object): #XXX: isstringlike better?
 def indent(code, spaces=4):
     '''indent a block of code with whitespace (default is 4 spaces)'''
     indent = indentsize(code)
-    if type(spaces) is int: spaces = ' '*spaces
+    from numbers import Integral
+    if isinstance(spaces, Integral): spaces = ' '*spaces
     # if '\t' is provided, will indent with a tab
     nspaces = indentsize(spaces)
     # blank lines (etc) need to be ignored