http://stackoverflow.com/questions/94935/what-is-the-difference-between-range-and-xrange-functions-in-python-2-x沉默是金 https://blog.markhoo.cn 操作系统 1 select,poll和epoll 其实所有的I/O都是轮询的方法,只不过实现的层面不同罢了.
Beautiful is better than ugly.Explicit is better than implicit.Simple is better than complex.Complex is better than complicated.Flat is better than nested.Sparse is better than dense.Readability counts.Special cases aren't special enough tobreakthe rules.Although practicality beats purity.Errors should...
pipe.send('Hello!') info=pipe.recv() print "proc_1 received:%s" %info write_file(info,lock) pipe.send('what is your name?') info=pipe.recv() write_file(info,lock) print "proc_1 received:%s" %info def proc_2(pipe,lock): info=pipe.recv() print "proc_2 received:%s" %info w...
http://stackoverflow.com/questions/136097/what-is-the-difference-between-staticmethod-and-classmethod-in-python https://realpython.com/blog/python/instance-class-and-static-methods-demystified/ 4 类变量和实例变量 类变量: 是可在类的所有实例之间共享的值(也就是说,它们不是单独分配给每个实例的)...
The resp.status will have our return code in it, and the resp.reason will explain why the return code was what it was. This will allow us to know the site is down. If we want to watch a site to make sure it stays up during our test, we can use the watch command. To update ...
And so here's an example of what one of those plots coming in that pipe might look like so you'VE got a cross section here that output from the North American regional re analysis and so this is just doing a plot of some potential temperature as well as the。Tangential and normal ...
>>> from pipe import take >>> for i in count() | take(5): ... print(i) 0 1 2 3 4 >>>take_while(predicate)Like itertools.takewhile, yields elements of the given iterable while the predicate is true:>>> from pipe import take_while >>> for i in count() | take_while(lambda...
What is it? Gooey converts your Console Applications into end-user-friendly GUI applications. It lets you focus on building robust, configurable programs in a familiar way, all without having to worry about how it will be presented to and interacted with by your average user. ...
(domain),shell=True,stdout=subprocess.PIPE)out = pi.stdout.read().decode('gbk') # 编码根据实际结果调整# 判断返回值中是否有 Addresses 字段,且该字段下ip地址要大于等于 2 个,即说明使用了 CDNstrs = re.findall(r'Addresses:(\s*(((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)\.){3}...
For more image functionality, install qrcode with the pil dependency so that pillow is installed and can be used for generating images: pip install "qrcode[pil]" What is a QR Code? A Quick Response code is a two-dimensional pictographic code used for its fast readability and comparatively...