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authorRaymond Hettinger <python@rcn.com>2012-01-09 05:32:01 (GMT)
committerRaymond Hettinger <python@rcn.com>2012-01-09 05:32:01 (GMT)
commit143f51ade5a9769033c4826a2a20d540fa466714 (patch)
tree13773bfe5f35833b18c81b8b7cc62c2015917b72 /Lib
parentf2840a88904e8e8e1060a686882be41362808657 (diff)
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Minor code clean-ups and beautifications.
Diffstat (limited to 'Lib')
-rw-r--r--Lib/queue.py34
1 files changed, 17 insertions, 17 deletions
diff --git a/Lib/queue.py b/Lib/queue.py
index de29ca5..c65ba4b 100644
--- a/Lib/queue.py
+++ b/Lib/queue.py
@@ -1,12 +1,12 @@
"""A multi-producer, multi-consumer queue."""
-from time import time as _time
try:
- import threading as _threading
+ import threading
except ImportError:
- import dummy_threading as _threading
+ import dummythreading as threading
from collections import deque
-import heapq
+from heapq import heappush, heappop
+from time import time
__all__ = ['Empty', 'Full', 'Queue', 'PriorityQueue', 'LifoQueue']
@@ -31,19 +31,19 @@ class Queue:
# that acquire mutex must release it before returning. mutex
# is shared between the three conditions, so acquiring and
# releasing the conditions also acquires and releases mutex.
- self.mutex = _threading.Lock()
+ self.mutex = threading.Lock()
# Notify not_empty whenever an item is added to the queue; a
# thread waiting to get is notified then.
- self.not_empty = _threading.Condition(self.mutex)
+ self.not_empty = threading.Condition(self.mutex)
# Notify not_full whenever an item is removed from the queue;
# a thread waiting to put is notified then.
- self.not_full = _threading.Condition(self.mutex)
+ self.not_full = threading.Condition(self.mutex)
# Notify all_tasks_done whenever the number of unfinished tasks
# drops to zero; thread waiting to join() is notified to resume
- self.all_tasks_done = _threading.Condition(self.mutex)
+ self.all_tasks_done = threading.Condition(self.mutex)
self.unfinished_tasks = 0
def task_done(self):
@@ -135,9 +135,9 @@ class Queue:
elif timeout < 0:
raise ValueError("'timeout' must be a positive number")
else:
- endtime = _time() + timeout
+ endtime = time() + timeout
while self._qsize() >= self.maxsize:
- remaining = endtime - _time()
+ remaining = endtime - time()
if remaining <= 0.0:
raise Full
self.not_full.wait(remaining)
@@ -174,9 +174,9 @@ class Queue:
elif timeout < 0:
raise ValueError("'timeout' must be a positive number")
else:
- endtime = _time() + timeout
+ endtime = time() + timeout
while not self._qsize():
- remaining = endtime - _time()
+ remaining = endtime - time()
if remaining <= 0.0:
raise Empty
self.not_empty.wait(remaining)
@@ -200,7 +200,7 @@ class Queue:
def _init(self, maxsize):
self.queue = deque()
- def _qsize(self, len=len):
+ def _qsize(self):
return len(self.queue)
# Put a new item in the queue
@@ -221,13 +221,13 @@ class PriorityQueue(Queue):
def _init(self, maxsize):
self.queue = []
- def _qsize(self, len=len):
+ def _qsize(self):
return len(self.queue)
- def _put(self, item, heappush=heapq.heappush):
+ def _put(self, item):
heappush(self.queue, item)
- def _get(self, heappop=heapq.heappop):
+ def _get(self):
return heappop(self.queue)
@@ -237,7 +237,7 @@ class LifoQueue(Queue):
def _init(self, maxsize):
self.queue = []
- def _qsize(self, len=len):
+ def _qsize(self):
return len(self.queue)
def _put(self, item):