core/various: python3 compat, prepare for python2 -> python3

see https://review.gluster.org/#/c/19788/,
    https://review.gluster.org/#/c/19871/,
    https://review.gluster.org/#/c/19952/,
    https://review.gluster.org/#/c/20104/,
    https://review.gluster.org/#/c/20162/,
    https://review.gluster.org/#/c/20185/, and
    https://review.gluster.org/#/c/20207/

This patch changes uses of has_key() as suggested by the 2to3 utility.

Note: Fedora packaging guidelines require explicit shebangs, so popular
practices like #!/usr/bin/env python and #!/usr/bin/python are not
allowed; they must be #!/usr/bin/python2 or #!/usr/bin/python3

Note: Selected small fixes from 2to3 utility. Specifically apply,
basestring, funcattrs, idioms, numliterals, set_literal, types, urllib,
zip, map, and raise have already been applied. Also version agnostic
imports for urllib, cpickle, socketserver, _thread, queue, etc., suggested
by Aravinda in https://review.gluster.org/#/c/19767/1

Note: these 2to3 fixes report no changes are necessary: asserts, buffer,
exec, execfile, exitfunc, filter, getcwdu, imports2, input, intern,
itertools, metaclass, methodattrs, ne, next, nonzero, operator, paren,
raw_input, reduce, reload, renames, repr, standarderror, sys_exc, throw,
tuple_params, xreadlines.

Updates: #411

Change-Id: I79bda20f1583a0a1bb0320667498f4c137de93b3
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>

2 files changed, 5 insertions, 5 deletions

diff --git a/xlators/experimental/fdl/src/gen_recon.py b/xlators/experimental/fdl/src/gen_recon.py
index 75323ea3dd9..69e45698703 100755
--- a/xlators/experimental/fdl/src/gen_recon.py
+++ b/xlators/experimental/fdl/src/gen_recon.py
@@ -101,7 +101,7 @@ def get_special_subs (name, args, fop_type):
 		code += fragments[recon_type].replace("@ARGNAME@",arg[1])		\
 									 .replace("@ARGTYPE@",arg[2])
 		cleanup_key = recon_type + "_CLEANUP"
-		if fragments.has_key(cleanup_key):
+		if cleanup_key in fragments:
 			new_frag = fragments[cleanup_key].replace("@ARGNAME@",arg[1])
 			# Make sure these get added in *reverse* order.  Otherwise, a
 			# failure for an earlier argument might goto a label that falls
diff --git a/xlators/features/glupy/examples/negative.py b/xlators/features/glupy/examples/negative.py
index 543f3109502..836008682ba 100644
--- a/xlators/features/glupy/examples/negative.py
+++ b/xlators/features/glupy/examples/negative.py
@@ -35,7 +35,7 @@ class xlator (Translator):
         pargfid = uuid2str(loc.contents.pargfid)
         print("lookup FOP: %s:%s" % (pargfid, loc.contents.name))
         # Check the cache.
-        if cache.has_key(pargfid):
+        if pargfid in cache:
             if loc.contents.name in cache[pargfid]:
                 print("short-circuiting for %s:%s" % (pargfid,
                     loc.contents.name))
@@ -55,11 +55,11 @@ class xlator (Translator):
         # Update the cache.
         if op_ret == 0:
             print("found %s, removing from cache" % name)
-            if cache.has_key(pargfid):
+            if pargfid in cache:
                 cache[pargfid].discard(name)
         elif op_errno == 2:    # ENOENT
             print("failed to find %s, adding to cache" % name)
-            if cache.has_key(pargfid):
+            if pargfid in cache:
                 cache[pargfid].add(name)
             else:
                 cache[pargfid] = {name}
@@ -85,7 +85,7 @@ class xlator (Translator):
         # Update the cache.
         if op_ret == 0:
             print("created %s, removing from cache" % name)
-            if cache.has_key(pargfid):
+            if pargfid in cache:
                 cache[pargfid].discard(name)
         del self.requests[key]
         dl.unwind_create(frame,cookie,this,op_ret,op_errno,fd,inode,buf,