Gevent Versions Save

• gevent.subprocess works under Python 3.5. In general, Python 3.5 has preliminary support. Reported in issue #653 by Squeaky.
• gevent.subprocess.Popen.communicate honors a timeout argument even if there is no way to communicate with the child process (none of stdin, stdout and stderr were set to PIPE). Noticed as part of the Python 3.5 test suite for the new function subprocess.run but impacts all versions (timeout is an official argument under Python 3 and a gevent extension with slightly different semantics under Python 2).
• Fix a possible ValueError from gevent.queue.Queue:peek. Reported in issue #647 by Kevin Chen.
• Restore backwards compatibility for using gevent.signal as a callable, which, depending on the order of imports, could be broken after the addition of the gevent.signal module. Reported in issue #648 by Sylvain Zimmer.
• gevent blocking operations performed at the top-level of a module after the system was monkey-patched under Python 2 could result in raising a LoopExit instead of completing the expected blocking operation. Note that performing gevent blocking operations in the top-level of a module is typically not recommended, but this situation can arise when monkey-patching existing scripts. Reported in issue #651 and issue #652 by Mike Kaplinskiy.
• SIGCHLD and waitpid now work for the pids returned by the (monkey-patched) os.forkpty and pty.fork functions in the same way they do for the os.fork function. Reported in issue #650 by Erich Heine.
• gevent.pywsgi.WSGIServer (WSGIHandler) does a better job detecting and reporting potential encoding errors for headers and the status line during start_response as recommended by the WSGI specification. In addition, under Python 2, unnecessary encodings and decodings (often a trip through the ASCII encoding) are avoided for conforming applications. This is an enhancement of an already documented and partially enforced constraint: beginning in 1.1a1, under Python 2, u'abc' would typically previously have been allowed, but u'\u1f4a3' would not; now, neither will be allowed, more closely matching the specification, improving debugability and performance and allowing for better error handling both by the application and by gevent (previously, certain encoding errors could result in gevent writing invalid/malformed HTTP responses). Reported by Greg Higgins and Carlos Sanchez.
• Code coverage by tests is now reported on coveralls.io.

• Detect and raise an error for several important types of programming errors even if Python interpreter optimizations are enabled with -O or PYTHONOPTIMIZE. Previously these would go undetected if optimizations were enabled, potentially leading to erratic, difficult to debug behaviour.
• Fix an AttributeError from gevent.queue.Queue when peek was called on an empty Queue. Reported in #643 by michaelvol.
• Make SIGCHLD handlers specified to signal.signal work with the child watchers that are used by default. Also make os.waitpid work with a first argument of -1. Noted by users of gunicorn.
• Under Python 2, any timeout set on a socket would be ignored when using the results of socket.makefile. Reported in #644 by Karan Lyons.

• Fix an AttributeError from gevent.monkey.patch_builtins on Python 2 when the future_ library is also installed. Reported by Carlos Sanchez.
• PyPy: Fix a DistutilsModuleError or ImportError if the CFFI module backing gevent.core needs to be compiled when the hub is initialized (due to a missing or invalid __pycache__ directory). Now, the module will be automtically compiled when gevent is imported (this may produce compiler output on stdout). Reported in :issue:619 by Thinh Nguyen and :issue:631 by Andy Freeland, with contributions by Jay Oster and Matt Dupre.
• PyPy: Improve the performance of gevent.socket.socket:sendall with large inputs. bench_sendall.py_ now performs about as well on PyPy as it does on CPython, an improvement of 10x (from ~60MB/s to ~630MB/s). See this pypy bug_ for details.
• Fix a possible TypeError when calling gevent.socket.wait. Reported in #635 by lanstin.
• gevent.socket.socket:sendto properly respects the socket's blocking status (meaning it can raise EWOULDBLOCK now in cases it wouldn't have before). Reported in :pr:634 by Mike Kaplinskiy.
• Common lookup errors using the :mod:threaded resolver <gevent.resolver_thread> are no longer always printed to stderr since they are usually out of the programmer's control and caught explicitly. (Programming errors like TypeError are still printed.) Reported in :issue:617 by Jay Oster and Carlos Sanchez.
• PyPy: Fix a TypeError from gevent.idle(). Reported in :issue:639 by chilun2008.
• The imap_unordered methods of a pool support a maxsize parameter to limit the number of results buffered waiting for the consumer. Reported in :issue:638 by Sylvain Zimmer.
• The class gevent.queue.Queue now consistently orders multiple blocked waiting put and get callers in the order they arrived. Previously, due to an implementation quirk this was often roughly the case under CPython, but not under PyPy. Now they both behave the same.
• The class gevent.queue.Queue now supports the len() function.

• Enable the c-ares resolver extension for PyPy.
• On some versions of PyPy on some platforms (notably 2.6.0 on 64-bit Linux), enabling gevent.monkey.patch_builtins could cause PyPy to crash. Reported in #618 by Jay Oster.
• gevent.kill raises the correct exception in the target greenlet. Reported in #623 by Jonathan Kamens.
• Various fixes on Windows. Reported in #625, #627, and #628 by jacekt and Yuanteng (Jeff) Pei. Fixed in #624.
• Add readable and writable methods to FileObjectPosix; this fixes e.g., help() on Python 3 when monkey-patched.

• setup.py can be run from a directory containing spaces. Reported in :issue:319 by Ivan Smirnov.
• setup.py can build with newer versions of clang on OS X. They enforce the distinction between CFLAGS and CPPFLAGS.
• gevent.lock.Semaphore is atomic on PyPy, just like it is on CPython. This comes at a small performance cost.
• Fixed regression that failed to set the successful value to False when killing a greenlet before it ran with a non-default exception. Fixed in :pr:608 by Heungsub Lee.
• libev's child watchers caused os.waitpid to become unreliable due to the use of signals on POSIX platforms. This was especially noticeable when using gevent.subprocess in combination with multiprocessing. Now, the monkey-patched os module provides a waitpid function that seeks to ameliorate this. Reported in :issue:600 by champax and :issue:452 by Łukasz Kawczyński.
• On platforms that implement select.poll, provide a gevent-friendly gevent.select.poll and corresponding monkey-patch. Implemented in :pr:604 by Eddi Linder.
• Allow passing of events to the io callback under PyPy. Reported in :issue:531 by M. Nunberg and implemented in :pr:604.
• gevent.thread.allocate_lock (and so a monkey-patched standard library allocate_lock) more closely matches the behaviour of the builtin: an unlocked lock cannot be released, and attempting to do so throws the correct exception (thread.error on Python 2, RuntimeError on Python 3). Previously, over-releasing a lock was silently ignored. Reported in :issue:308 by Jędrzej Nowak.
• gevent.fileobject.FileObjectThread uses the threadpool to close the underling file-like object. Reported in :issue:201 by vitaly-krugl.
• Malicious or malformed HTTP chunked transfer encoding data sent to the gevent.pywsgi handler is handled more robustly, resulting in "HTTP 400 bad request" responses instead of a 500 error or, in the worst case, a server-side hang. Reported in :issue:229 by Björn Lindqvist.
• Importing the standard library threading module before using gevent.monkey.patch_all() no longer causes Python 3.4 to fail to get the repr of the main thread, and other CPython platforms to return an unjoinable DummyThread. (Note that this is not recommended.) Reported in :issue:153.
• Under Python 2, use the io package to implement FileObjectPosix. This unifies the code with the Python 3 implementation, and fixes problems with using seek(). See :issue:151.
• Under Python 2, importing a module that uses gevent blocking functions at its top level from multiple greenlets no longer produces import errors (Python 3 handles this case natively). Reported in :issue:108 by shaun and initial fix based on code by Sylvain Zimmer.
• gevent.spawn, spawn_raw and spawn_later, as well as the Greenlet constructor, immediately produce useful TypeErrors if asked to run something that cannot be run. Previously, the spawned greenlet would die with an uncaught TypeError the first time it was switched to. Reported in :issue:119 by stephan.
• Recursive use of gevent.threadpool.ThreadPool.apply no longer raises a LoopExit error (using ThreadPool.spawn and then get on the result still could; you must be careful to use the correct hub). Reported in :issue:131 by 8mayday.
• When the threading module is monkey-patched, the module-level lock in the logging module is made greenlet-aware, as are the instance locks of any configured handlers. This makes it safer to import modules that use the standard pattern of creating a module-level Logger instance before monkey-patching. Configuring logging with a basic configuration and then monkey-patching is also safer (but not configurations that involve such things as the SocketHandler).
• Fix monkey-patching of threading.RLock under Python 3.
• Under Python 3, monkey-patching at the top-level of a module that was imported by another module could result in a RuntimeError from importlib. Reported in :issue:615 by Daniel Mizyrycki. (The same thing could happen under Python 2 if a threading.RLock was held around the monkey-patching call; this is less likely but not impossible with import hooks.)
• Fix configuring c-ares for a 32-bit Python when running on a 64-bit platform. Reported in :issue:381 and fixed in :pr:616 by Chris Lane.
• (Experimental) Let the pywsgi.WSGIServer accept a logging.Logger instance for its log and (new) error_log parameters. Take care that the system is fully monkey-patched very early in the process's lifetime if attempting this, and note that non-file handlers have not been tested. Fixes :issue:106.

• gevent.threadpool.ThreadPool.imap and imap_unordered now accept multiple iterables.
• (Experimental) Exceptions raised from iterating using the ThreadPool or Group mapping/application functions should now have the original traceback.
• gevent.threadpool.ThreadPool.apply now raises any exception raised by the called function, the same as gevent.pool.Group/Pool and the builtin apply function. This obsoletes the undocumented apply_e function. Original PR #556 by Robert Estelle.
• Monkey-patch the selectors module from patch_all and patch_select on Python 3.4. See #591 .
• Additional query functions for the :mod:gevent.monkey module allow knowing what was patched. Discussed in :issue:135 and implemented in :pr:325 by Nathan Hoad.
• In non-monkey-patched environments under Python 2.7.9 or above or Python 3, using a gevent SSL socket could cause the greenlet to block. See :issue:597 by David Ford.
• gevent.socket.socket.sendall supports arbitrary objects that implement the buffer protocol (such as ctypes structures), just like native sockets. Reported in :issue:466 by tzickel.
• Added support for the onerror attribute present in CFFI 1.2.0 for better signal handling under PyPy. Thanks to Armin Rigo and Omer Katz. (See https://bitbucket.org/cffi/cffi/issue/152/handling-errors-from-signal-handlers-in)
• The gevent.subprocess module is closer in behaviour to the standard library under Python 3, at least on POSIX. The pass_fds, restore_signals, and start_new_session arguments are now unimplemented, as are the timeout parameters to various functions. Under Python 2, the previously undocumented timeout parameter to Popen.communicate raises an exception like its Python 3 counterpart.
• An exception starting a child process with the gevent.subprocess module no longer leaks file descriptors. Reported in :pr:374 by 陈小玉.
• The example echoserver.py no longer binds to the standard X11 TCP port. Reported in :issue:485 by minusf.
• gevent.iwait no longer throws LoopExit if the caller switches greenlets between return values. Reported and initial patch in :pr:467 by Alexey Borzenkov.
• The default threadpool and default threaded resolver work in a forked child process, such as with multiprocessing.Process. Previously the child process would hang indefinitely. Reported in :issue:230 by Lx Yu.
• Fork watchers are more likely to (eventually) get called in a multi-threaded program.
• gevent.killall accepts an arbitrary iterable for the greenlets to kill. Reported in :issue:404 by Martin Bachwerk; seen in combination with older versions of simple-requests.
• gevent.local.local objects are now eligible for garbage collection as soon as the greenlet finishes running, matching the behaviour of the built-in threading.local (when implemented natively). Reported in :issue:387 by AusIV.
• Killing a greenlet (with gevent.kill or gevent.greenlet.Greenlet.kill) before it is actually started and switched to now prevents the greenlet from ever running, instead of raising an exception when it is later switched to. See :issue:330 reported by Jonathan Kamens.

See the changelog for a detailed list of changes.

See https://github.com/gevent/gevent/blob/1.0.2/changelog.rst#release-102-may-23-2015 for a list of changes.

See https://github.com/surfly/gevent/blob/1.0.x/changelog.rst#release-101-apr-30-2014 for list of changes

Final version of gevent 1.0.