Simplify _compat.py now that we only run on newer Pythonsremove_u

- We have u'literals' so we don't need a _u() function.
  For the record the Emacs replacement regex was
  `_u(\(['"]\)\([^)]*\)\1) -> u\1\2\1`. Amazingly, I typed that right
  on the first try.

A few things were only used in one (test) file or function, so it was
better to keep the use, if any, local and out of the "public" api:

- We can use io.StringIO everywhere and it's fast. It was only
 imported in one file anyway.
- We can just import pickle. It was only imported in one file anyway.
- TEXT was only used in one test function, `type(u'')` is just as
 clear (especially since the usual name is `text_type`).
- reload was only used in one test function, so move the definition
 there.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/zope/security/tests/test_proxy.py b/src/zope/security/tests/test_proxy.py
index ca4a8a3..62d6a83 100644
--- a/src/zope/security/tests/test_proxy.py
+++ b/src/zope/security/tests/test_proxy.py
@@ -1957,7 +1957,11 @@ class LocationProxySecurityCheckerTests(unittest.TestCase):
         import sys
         from zope.location.location import LocationProxy
         import zope.security
-        from zope.security._compat import reload
+        try:
+            from imp import reload
+        except ImportError:
+            reload = reload # Python 2
+
         # This attribute is set when zope.security.decorator is imported, to
         # show that it will be set too, if zope.security.proxy is imported
         # we set it to a different value at first: