@ -1720,15 +1720,6 @@ cursor.execute(<span class="hljs-string">'<query>'</span>, <dict/namedt
< deque> .extendleft(< collection> ) < span class = "hljs-comment" > # Collection gets reversed.< / span >
< deque> .extendleft(< collection> ) < span class = "hljs-comment" > # Collection gets reversed.< / span >
< deque> .rotate(n=< span class = "hljs-number" > 1< / span > ) < span class = "hljs-comment" > # Rotates elements to the right.< / span >
< deque> .rotate(n=< span class = "hljs-number" > 1< / span > ) < span class = "hljs-comment" > # Rotates elements to the right.< / span >
< / code > < / pre >
< / code > < / pre >
< div > < h3 id = "example-2" > Example< / h3 > < pre > < code class = "python language-python hljs" > < span class = "hljs-meta" > > > > < / span > a = deque([< span class = "hljs-number" > 1< / span > , < span class = "hljs-number" > 2< / span > , < span class = "hljs-number" > 3< / span > ], maxlen=< span class = "hljs-number" > 3< / span > )
< span class = "hljs-meta" > > > > < / span > a.append(< span class = "hljs-number" > 4< / span > )
[< span class = "hljs-number" > 2< / span > , < span class = "hljs-number" > 3< / span > , < span class = "hljs-number" > 4< / span > ]
< span class = "hljs-meta" > > > > < / span > a.appendleft(< span class = "hljs-number" > 5< / span > )
[< span class = "hljs-number" > 5< / span > , < span class = "hljs-number" > 2< / span > , < span class = "hljs-number" > 3< / span > ]
< span class = "hljs-meta" > > > > < / span > a.insert(< span class = "hljs-number" > 1< / span > , < span class = "hljs-number" > 6< / span > )
IndexError: deque already at its maximum size
< / code > < / pre > < / div >
< div > < h2 id = "threading" > < a href = "#threading" name = "threading" > #< / a > Threading< / h2 > < ul >
< div > < h2 id = "threading" > < a href = "#threading" name = "threading" > #< / a > Threading< / h2 > < ul >
< li > < strong > CPython interpreter can only run a single thread at the time.< / strong > < / li >
< li > < strong > CPython interpreter can only run a single thread at the time.< / strong > < / li >
< li > < strong > That is why using multiple threads won't result in a faster execution, unless there is an I/O operation in the thread.< / strong > < / li >
< li > < strong > That is why using multiple threads won't result in a faster execution, unless there is an I/O operation in the thread.< / strong > < / li >
@ -1760,8 +1751,20 @@ lock.release()
< Future> = executor.submit(< function> , < arg_1> , ...)
< Future> = executor.submit(< function> , < arg_1> , ...)
< / code > < / pre > < / div >
< / code > < / pre > < / div >
< pre > < code class = "python language-python hljs" > < bool> = < Future> .done() < span class = "hljs-comment" > # Checks if thread has finished executing.< / span >
< obj> = < Future> .result() < span class = "hljs-comment" > # Waits for thread to finish and returns result.< / span >
< pre > < code class = "python language-python hljs" > < bool> = < Future> .done() < span class = "hljs-comment" > # Checks if thread has finished executing.< / span >
< obj> = < Future> .result() < span class = "hljs-comment" > # Waits for thread to finish and returns result.< / span >
< / code > < / pre >
< div > < h3 id = "queue" > Queue< / h3 > < ul >
< li > < strong > A thread-safe FIFO queue. For LIFO queue use 'queue.LifoQueue'.< / strong > < / li >
< / ul > < pre > < code class = "python language-python hljs" > < span class = "hljs-keyword" > from< / span > queue < span class = "hljs-keyword" > import< / span > Queue
< Queue> = Queue(maxsize=< span class = "hljs-number" > 0< / span > )
< / code > < / pre > < / div >
< pre > < code class = "python language-python hljs" > < Queue> .put(< el> ) < span class = "hljs-comment" > # Blocks until queue has a free spot.< / span >
< Queue> .put_nowait(< el> ) < span class = "hljs-comment" > # Raises queue.Full exception if full.< / span >
< el> = < Queue> .get() < span class = "hljs-comment" > # Blocks until queue contains an item.< / span >
< el> = < Queue> .get_nowait() < span class = "hljs-comment" > # Raises _queue.Empty exception if empty.< / span >
< / code > < / pre >
< / code > < / pre >
< div > < h2 id = "operator" > < a href = "#operator" name = "operator" > #< / a > Operator< / h2 > < pre > < code class = "python language-python hljs" > < span class = "hljs-keyword" > from< / span > operator < span class = "hljs-keyword" > import< / span > add, sub, mul, truediv, floordiv, mod, pow, neg, abs
< div > < h2 id = "operator" > < a href = "#operator" name = "operator" > #< / a > Operator< / h2 > < pre > < code class = "python language-python hljs" > < span class = "hljs-keyword" > from< / span > operator < span class = "hljs-keyword" > import< / span > add, sub, mul, truediv, floordiv, mod, pow, neg, abs
< span class = "hljs-keyword" > from< / span > operator < span class = "hljs-keyword" > import< / span > eq, ne, lt, le, gt, ge
< span class = "hljs-keyword" > from< / span > operator < span class = "hljs-keyword" > import< / span > eq, ne, lt, le, gt, ge
@ -2144,7 +2147,7 @@ right = [[<span class="hljs-number">0.1</span> , <span class="hljs-number">0.6<
right = [[< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ], [< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ], [< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ]] < span class = "hljs-comment" > # Shape: (3, 3) < - !< / span >
right = [[< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ], [< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ], [< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ]] < span class = "hljs-comment" > # Shape: (3, 3) < - !< / span >
< / code > < / pre > < / div >
< / code > < / pre > < / div >
< div > < h4 id = "3ifneithernonmatchingdimensionhassize1riseanerror" > 3. If neither non-matching dimension has size 1, rise an error.< / h4 > < div > < h3 id = "example-3 " > Example< / h3 > < div > < h4 id = "foreachpointreturnsindexofitsnearestpoint010608121" > For each point returns index of its nearest point (< code class = "python hljs" > [< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ] => [< span class = "hljs-number" > 1< / span > , < span class = "hljs-number" > 2< / span > , < span class = "hljs-number" > 1< / span > ]< / code > ):< / h4 > < pre > < code class = "python language-python hljs" > < span class = "hljs-meta" > > > > < / span > points = np.array([< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ])
< div > < h4 id = "3ifneithernonmatchingdimensionhassize1riseanerror" > 3. If neither non-matching dimension has size 1, rise an error.< / h4 > < div > < h3 id = "example-2 " > Example< / h3 > < div > < h4 id = "foreachpointreturnsindexofitsnearestpoint010608121" > For each point returns index of its nearest point (< code class = "python hljs" > [< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ] => [< span class = "hljs-number" > 1< / span > , < span class = "hljs-number" > 2< / span > , < span class = "hljs-number" > 1< / span > ]< / code > ):< / h4 > < pre > < code class = "python language-python hljs" > < span class = "hljs-meta" > > > > < / span > points = np.array([< span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ])
[ < span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ]
[ < span class = "hljs-number" > 0.1< / span > , < span class = "hljs-number" > 0.6< / span > , < span class = "hljs-number" > 0.8< / span > ]
< span class = "hljs-meta" > > > > < / span > wrapped_points = points.reshape(< span class = "hljs-number" > 3< / span > , < span class = "hljs-number" > 1< / span > )
< span class = "hljs-meta" > > > > < / span > wrapped_points = points.reshape(< span class = "hljs-number" > 3< / span > , < span class = "hljs-number" > 1< / span > )
[[ < span class = "hljs-number" > 0.1< / span > ],
[[ < span class = "hljs-number" > 0.1< / span > ],