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Merge pull request #26 from AlexVerrico/master
Add Python 3 Support
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Original file line number | Diff line number | Diff line change |
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@@ -1,33 +1,54 @@ | ||
# http://code.activestate.com/recipes/577187-python-thread-pool/ | ||
# based on: https://www.metachris.com/2016/04/python-threadpool/ | ||
# which was based on http://code.activestate.com/recipes/577187-python-thread-pool/ | ||
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import sys | ||
IS_PY2 = sys.version_info < (3, 0) | ||
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if IS_PY2: | ||
from Queue import Queue | ||
else: | ||
from queue import Queue | ||
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from Queue import Queue | ||
from threading import Thread | ||
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class Worker(Thread): | ||
"""Thread executing tasks from a given tasks queue""" | ||
""" Thread executing tasks from a given tasks queue """ | ||
def __init__(self, tasks): | ||
Thread.__init__(self) | ||
self.tasks = tasks | ||
self.daemon = True | ||
self.start() | ||
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def run(self): | ||
while True: | ||
func, args, kargs = self.tasks.get() | ||
try: func(*args, **kargs) | ||
except Exception, e: print e | ||
self.tasks.task_done() | ||
try: | ||
func(*args, **kargs) | ||
except Exception as e: | ||
# An exception happened in this thread | ||
print(e) | ||
finally: | ||
# Mark this task as done, whether an exception happened or not | ||
self.tasks.task_done() | ||
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class ThreadPool: | ||
"""Pool of threads consuming tasks from a queue""" | ||
""" Pool of threads consuming tasks from a queue """ | ||
def __init__(self, num_threads): | ||
self.tasks = Queue(num_threads) | ||
for _ in range(num_threads): Worker(self.tasks) | ||
for _ in range(num_threads): | ||
Worker(self.tasks) | ||
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def add_task(self, func, *args, **kargs): | ||
"""Add a task to the queue""" | ||
""" Add a task to the queue """ | ||
self.tasks.put((func, args, kargs)) | ||
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def map(self, func, args_list): | ||
""" Add a list of tasks to the queue """ | ||
for args in args_list: | ||
self.add_task(func, args) | ||
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def wait_completion(self): | ||
"""Wait for completion of all the tasks in the queue""" | ||
""" Wait for completion of all the tasks in the queue """ | ||
self.tasks.join() |
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