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Forced naming of parameters in Python
...ameters after _p=__named_only_start must be provided by name only (unless knowledge about the special sentinel object __named_only_start is obtained and used).
Pros:
Parameters are explicit in number and meaning (the later if good names are also chosen, of course).
If the sentinel is specified a...
Is there a Python function to determine which quarter of the year a date is in?
...nge(1, 13):
print (m-1)//3 + 1,
print
gives 1 1 1 2 2 2 3 3 3 4 4 4 -- now doesn't this look vastly preferable to you?-)
This proves that the question is well warranted, I think;-).
I don't think the datetime module should necessarily have every possible useful calendric function, but I do kno...
How to define “type disjunction” (union types)?
...ntation :-) ... but I'm still feeling like this is something convoluted... now just because it's not yet available straight away from Scala. As Miles says: "Now we just need to pester Martin and Adriaan to make it directly accessible."
– Richard Gomes
Mar 29 '1...
back button callback in navigationController in iOS
...indexOfObject:self]==NSNotFound) {
// back button was pressed. We know this is true because self is no longer
// in the navigation stack.
}
[super viewWillDisappear:animated];
}
share
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How to avoid .pyc files?
...
From "What’s New in Python 2.6 - Interpreter Changes":
Python can now be prevented from
writing .pyc or .pyo files by
supplying the -B switch to the Python
interpreter, or by setting the
PYTHONDONTWRITEBYTECODE environment
variable before running the
interpreter. This setting is...
How do I replace whitespaces with underscore?
...the heck, I meant to upvote this, but for some reason it got downvoted and now my vote is locked in. Sorry Jarret.
– Dave Liu
May 3 '19 at 18:25
add a comment
...
Creating a singleton in Python
... http://googletesting.blogspot.com/2008/08/root-cause-of-singletons.html:
Now, there is one kind of Singleton which is OK. That is a singleton where all of the reachable objects are immutable. If all objects are immutable than Singleton has no global state, as everything is constant. But it is so e...
python exception message capturing
...ogger.error(e, exc_info=True)
... exception handling ...
This is now the old way (though still works):
import sys, traceback
def catchEverything():
try:
... some operation(s) ...
except:
exc_type, exc_value, exc_traceback = sys.exc_info()
... exception han...
Installing Python 3 on RHEL
...t instance to the system default with an altinstall:
$ make altinstall
Now if you want an alternative installation directory, you can pass --prefix to the configurecommand.
Example: for 'installing' Python in /opt/local, just add --prefix=/opt/local.
After the make install step: In order to u...
How do I create some kind of table of content in GitHub wiki?
...here is one catch in creating links. They have to be lower case. I didn't know that and was wondering why my TOC isn't working. I used #Headers instead of #headers. I thought it was a typo in your answer. Perhaps you can add to your answer this information.
– t3chb0t
...