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How should I log while using multiprocessing in Python?
... = threading.Thread(target=self.receive)
t.daemon = True
t.start()
def setFormatter(self, fmt):
logging.Handler.setFormatter(self, fmt)
self._handler.setFormatter(fmt)
def receive(self):
while True:
try:
record = self.queu...
What is Scala's yield?
...
The answer starts like this: "It is used in sequence comprehensions (like Python's list-comprehensions and generators, where you may use yield too)." This mistakenly leads one to think that yield in Scala is similar to yield in Python. ...
Is non-blocking I/O really faster than multi-threaded blocking I/O? How?
...or I/O operations to complete. As soon as an asynchronous I/O operation is started, it releases the thread on which it was launched and a callback is registered. When the operation completes, the callback is queued for execution on the first available thread.
If the I/O operation is executed synchr...
What's the best way of scraping data from a website? [closed]
...
You will definitely want to start with a good web scraping framework. Later on you may decide that they are too limiting and you can put together your own stack of libraries but without a lot of scraping experience your design will be much worse than pj...
Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
... of synchronized methods on the same object to interleave"
// Start the thread
thread.start();
thread2.start();
}
public synchronized void increment() {
System.out.println("Begin thread " + Thread.currentThread().getName());
System.out.println(t...
What is the meaning of the 'g' flag in regular expressions?
...nstance against a matching string, it will eventually fail because it only starts searching at the lastIndex.
// regular regex
const regex = /foo/;
// same regex with global flag
const regexG = /foo/g;
const str = " foo foo foo ";
const test = (r) => console.log(
r,
r.la...
How to declare variable and use it in the same Oracle SQL script?
...you want to declare date and then use it in SQL Developer.
DEFINE PROPp_START_DT = TO_DATE('01-SEP-1999')
SELECT *
FROM proposal
WHERE prop_start_dt = &PROPp_START_DT
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Regular expression for a hexadecimal number?
...
How about the following?
0[xX][0-9a-fA-F]+
Matches expression starting with a 0, following by either a lower or uppercase x, followed by one or more characters in the ranges 0-9, or a-f, or A-F
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Get raw POST body in Python Flask regardless of Content-Type header
...):
self.application = application
def __call__(self, environ, start_response):
length = int(environ.get('CONTENT_LENGTH') or 0)
body = environ['wsgi.input'].read(length)
environ['body_copy'] = body
# replace the stream since it was exhausted by read()
...
What is a magic number, and why is it bad? [closed]
...ts (i.e. your Session.Timeout = 50 call, which is also set to 25 and users start reporting too frequent timeouts).
Also, the code can be hard to understand, i.e. "if a < 50 then bla" - if you encounter that in the middle of a complicated function, other developers who are not familiar with the c...