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Iterate a list with indexes in Python
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python enumerate function will be satisfied your requirements
result = list(enumerate([1,3,7,12]))
print result
output
[(0, 1), (1, 3), (2, 7),(3,12)]
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How does collections.defaultdict work?
I've read the examples in python docs, but still can't figure out what this method means. Can somebody help? Here are two examples from the python docs
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What is pip's equivalent of `npm install package --save-dev`?
...ject with an existing requirements.txt, installing all requirements (I use Python3.7 but you can remove the --three if you do not) is as simple as:
pipenv --three install
Activating the virtualenv to run commands is also easy
pipenv shell
Installing requirements will automatically update the P...
Can modules have properties the same way that objects can?
With python properties, I can make it such that
6 Answers
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LaTeX package for syntax highlighting of code in various languages
...require jumping through a dozen hoops, upgrading to MiKTeX 2.8, installing Python, installing other components and so on. Minted documentation is poor and it doesn't support breaking long lines. But eventually I got it to render Java/XML in Eclipse colours! jevon.org/wiki/Eclipse_Pygments_Style
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Getting only 1 decimal place [duplicate]
...ing to represent it with only one digit:
print("{:.1f}".format(number)) # Python3
print "%.1f" % number # Python2
or actually round off the other decimal places?
round(number,1)
or even round strictly down?
math.floor(number*10)/10
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How to get a random number between a float range?
...ndom number in the range [a, b) or [a, b] depending on rounding github.com/python/cpython/blob/…
– Pavel
Jun 4 '19 at 8:47
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Unpacking a list / tuple of pairs into two lists / tuples [duplicate]
... To the OP, stackoverflow.com/questions/5239856/foggy-on-asterisk-in-python is helpful if you don't know about the "splat" operator.
– dicato
Sep 26 '11 at 18:07
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Negative list index? [duplicate]
... the end of the list, so n[-1] means the last item in the list n. Any good Python tutorial should have told you this.
It's an unusual convention that only a few other languages besides Python have adopted, but it is extraordinarily useful; in any other language you'll spend a lot of time writing n[...
numpy matrix vector multiplication [duplicate]
...pected, but I simply cannot find any information about how this is done in Python's Numpy module.
1 Answer
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