[Python-checkins] cpython: Issue #18682: Optimized pprint functions for builtin scalar types.
serhiy.storchaka
python-checkins at python.org
Sat May 16 20:39:40 CEST 2015
https://hg.python.org/cpython/rev/c77a42c234d6
changeset: 96100:c77a42c234d6
user: Serhiy Storchaka <storchaka at gmail.com>
date: Sat May 16 21:38:05 2015 +0300
summary:
Issue #18682: Optimized pprint functions for builtin scalar types.
files:
Lib/pprint.py | 22 ++++------------------
Misc/NEWS | 2 ++
2 files changed, 6 insertions(+), 18 deletions(-)
diff --git a/Lib/pprint.py b/Lib/pprint.py
--- a/Lib/pprint.py
+++ b/Lib/pprint.py
@@ -489,24 +489,8 @@
def _safe_repr(object, context, maxlevels, level):
typ = type(object)
- if typ is str:
- if 'locale' not in _sys.modules:
- return repr(object), True, False
- if "'" in object and '"' not in object:
- closure = '"'
- quotes = {'"': '\\"'}
- else:
- closure = "'"
- quotes = {"'": "\\'"}
- qget = quotes.get
- sio = _StringIO()
- write = sio.write
- for char in object:
- if char.isalpha():
- write(char)
- else:
- write(qget(char, repr(char)[1:-1]))
- return ("%s%s%s" % (closure, sio.getvalue(), closure)), True, False
+ if typ in _builtin_scalars:
+ return repr(object), True, False
r = getattr(typ, "__repr__", None)
if issubclass(typ, dict) and r is dict.__repr__:
@@ -571,6 +555,8 @@
rep = repr(object)
return rep, (rep and not rep.startswith('<')), False
+_builtin_scalars = frozenset({str, bytes, bytearray, int, float, complex,
+ bool, type(None)})
def _recursion(object):
return ("<Recursion on %s with id=%s>"
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -47,6 +47,8 @@
Library
-------
+- Issue #18682: Optimized pprint functions for builtin scalar types.
+
- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8).
- Issue #23488: Random generator objects now consume 2x less memory on 64-bit.
--
Repository URL: https://hg.python.org/cpython
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