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Extract first item of each sublist

...[1,2,3],[11,12,13],[21,22,23]] >>> zip(*lst)[0] (1, 11, 21) Or, Python 3 where zip does not produce a list: >>> list(zip(*lst))[0] (1, 11, 21) Or, >>> next(zip(*lst)) (1, 11, 21) Or, (my favorite) use numpy: >>> import numpy as np >>> a=np.array...
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How to delete last item in list?

...d. (as stated by @pltrdy in the comments) Note 2: The code could use some Python idioms. I highly recommend reading this: Code Like a Pythonista: Idiomatic Python (via wayback machine archive). share | ...
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OOP vs Functional Programming vs Procedural [closed]

...y better off with that. For a small web application, there are some great Python, PHP, and Ruby frameworks that'll get you off and running very quickly. Java is a great choice for larger projects because of the compile-time checking and enterprise libraries and platforms. It used to be the case t...
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Does Go have “if x in” construct similar to Python?

... (probably about as slow as if you wrote it out in a dynamic language like Python). Other than that, no. That's what people mean when they say that Go doesn't have generics. – andybalholm May 13 '15 at 15:44 ...
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“/usr/bin/ld: cannot find -lz”

... Also helped me install/build lxml-3.4.0 for Python via pip on Ubuntu 14.04 LTS/trusty. Thanks! – Marian Sep 15 '14 at 8:07 add a comment ...
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efficient circular buffer?

I want to create an efficient circular buffer in python (with the goal of taking averages of the integer values in the buffer). ...
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How do I profile memory usage in Python?

... This one has been answered already here: Python memory profiler Basically you do something like that (cited from Guppy-PE): >>> from guppy import hpy; h=hpy() >>> h.heap() Partition of a set of 48477 objects. Total size = 3265516 bytes. Index C...
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Python timedelta in years

...29th February 2008 it returns Zero- at least for me; not 1 as you suggest (Python 2.5.2). There's no need to rude Mr Machin. Exactly what two dates are you having trouble with? – John Mee Feb 8 '10 at 6:16 ...
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Finding the index of an item in a list

..., "baz"] and an item in the list "bar" , how do I get its index ( 1 ) in Python? 31 Answers ...
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How to input a regex in string.replace?

... Another good reference sees w3schools.com/python/python_regex.asp – Carson May 15 at 11:23 ...