removed hack for switching standard descriptors in favor of using LOG_STDOUT=False by default

scrapy/conf/commands/crawl.py

-LOG_STDOUT = True

scrapy/log.py

@@ -5,7 +5,6 @@ See documentation in docs/topics/logging.rst
 """
 import sys
 from traceback import format_exc
-from contextlib import contextmanager
 
 from twisted.python import log
 from scrapy.xlib.pydispatch import dispatcher
@@ -73,13 +72,3 @@ def err(*args, **kwargs):
     component = kwargs.pop('component', BOT_NAME)
     kwargs['system'] = domain if domain else component
     log.err(*args, **kwargs)
-
-_std_descriptors_backup = (sys.stdout, sys.stderr)
-
-@contextmanager
-def _std_descriptors():
-    cur = (sys.stdout, sys.stderr)
-    sys.stdout, sys.stderr = _std_descriptors_backup
-    yield
-    sys.stdout, sys.stderr = cur
-

scrapy/shell.py

@@ -4,8 +4,6 @@ Scrapy Shell
 See documentation in docs/topics/shell.rst
 """
 
-from __future__ import with_statement
-
 import os
 import urllib
 import urlparse
@@ -22,7 +20,6 @@ from scrapy.core.manager import scrapymanager
 from scrapy.core.engine import scrapyengine
 from scrapy.http import Request
 from scrapy.fetcher import get_or_create_spider
-from scrapy import log
 
 def relevant_var(varname):
     return varname not in ['shelp', 'fetch', 'view', '__builtins__', 'In', \
@@ -151,6 +148,4 @@ class Shell(object):
 
 def inspect_response(response):
     """Open a shell to inspect the given response"""
-    with log._std_descriptors():
-        shell = Shell(nofetch=True)
-        shell.inspect_response(response)
+    Shell(nofetch=True).inspect_response(response)

scrapy/utils/pdb.py

-"""
-Function for invoking the Python Debugger from Scrapy
-"""
-
-from __future__ import absolute_import, with_statement
-
-from pdb import Pdb
-
-from scrapy import log
-
-class ScrapyPdb(Pdb):
-
-    def setup(self, f, t):
-        Pdb.setup(self, f, t)
-        self.curindex -= 2
-
-def set_trace():
-    """Like pdb.set_trace() but works nice with the Scrapy log"""
-    with log._std_descriptors():
-        ScrapyPdb().set_trace()