The logging library takes a modular approach and offers several categories of components: loggers, handlers, filters, and formatters. Loggers expose the interface that application code directly uses. Handlers send the log records (created by loggers) to the appropriate destination. Filters provide a...
this key must remain private to ensure security. Public-key encryption uses two keys – one for encrypting information, which is shared publicly with anyone who needs it via their digital certificate or ID; and one for decrypting information sent back to them – which must remain private. Anoth...
One way to avoid this issue is to maintain a reference to the exception objectthe scope of theblock so that it remains accessible. Here’s a version of the previous example that uses this technique, thereby yielding code that is both Python 2 and Python 3 friendly: ...
Python:(x/2 for x in iter) Snakes:(with-yield (do-generator (x iter) (yield (/ x 2))) Snakes' goal is to recreate the concept of python generators while staying within the bounds of lisp idiom. Its goal is not to look like python, so it doesn't implement for... in style syn...
Similarly to allowing developers to support both pip and conda ecosystems, pyctdev allows developers to support multiple versions of python. For python, doit uses tox to run same tests over multiple environments using tox. For conda, pyctdev runs conda build over multiple versions of python....
each time receiving the then-current value ofi+1and binding it to a scopednumvariable. The outer function returns the inner function (which also uses this scopednumvariable) and the element’sonclickis set to that inner function. This ensures that eachonclickreceives and uses the properivalue...
The Python math module provides the mathematical functions listed in Table 3.2. Two mathematical constants, pi and e, are also defined in the math module. They can be accessed using math.pi and math.e. Listing 3.1 is a program that tests some math func- tions. Because the program uses ...
You can write a Python, Perl, Bash, or other kind of script that uses the features of those languages without delving into any database-specific APIs. You can use a script to produce or manipulate input data for Impala, and to drive theimpala-shellinterpreter to run SQL statements (primari...
In a communications network, a network node equipped for interfacing with another network that uses different protocols. A gateway may contain devices such as protocol translators, impedance matching devices, rate converters, fault...
# On Python 3, sys.stdout doesn't accept bytes, and sys.stdout.buffer # must be used. yield getattr(sys.stdout, 'buffer', sys.stdout) return # Run with the same options that git uses (see setup_pager in git repo). # -F: Automatically quit if the output is less than one sc...