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What's the difference between globals(), locals(), and vars()?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Python module for converting PDF to text [closed]
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regarding python 3, there is a six-based fork pypi.python.org/pypi/pdfminer.six
– Denis Cornehl
Dec 4 '15 at 10:10
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Getting an empty JQuery object
...a change handler on a select box to show and hide some follow up questions based on the value of the selection.
4 Answers
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How do I find the duplicates in a list and create another list with them?
...anking slightly changes when pypy is used. Most interestingly, the Counter-based approach benefits hugely from pypy's optimizations, whereas the method caching approach I have suggested seems to have almost no effect.
$ pypy -mtimeit -s 'import test' 'test.JohnLaRooy(test.l)'
100000 loops, best of ...
How do you know when to use fold-left and when to use fold-right?
...oldr proceeds:
1 + (2 + (3 + 4))
where you can see the traversal to the base case 4 and building up the result from there.
So I posit a rule of thumb: if it looks like a list iteration, one that would be simple to write in tail-recursive form, foldl is the way to go.
But really this will be pro...
How do I check if there are duplicates in a flat list?
...an be ignored, which is the ultimate shortcut.
This is an interesting set based approach I adapted straight from moooeeeep:
def getDupes(l):
seen = set()
seen_add = seen.add
for x in l:
if x in seen or seen_add(x):
yield x
Accordingly, a full list of dupes would b...
Real world example about how to use property feature in python?
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if value > 10:
raise ValueError("This pedometer is based on the human stride - a stride length above 10m is not supported")
else:
self._stride_length = value
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When to use references vs. pointers
...row parts of the code, to help limit the dangerous parts of the whole code base.
In your example, there is no point in using a pointer as argument because:
if you provide nullptr as the argument, you're going in undefined-behaviour-land;
the reference attribute version doesn't allow (without easy t...
How to print to console in pytest?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How do I import other TypeScript files?
...h tsc on your main .ts file. The compiler figures out all the dependencies based on your reference tags and generates a single output .js file for the entire application: tsc --out app.js main.ts
– null
Apr 13 '14 at 9:57
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