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Getting one value from a tuple
Is there a way to get one value from a tuple in Python using expressions?
2 Answers
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How do I switch between the header and implementation file in Xcode 4?
...ng, instead of hitting the same key binding 3 times in a row to cycle back from file 2 to file 1.
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Automatic exit from bash shell script on error [duplicate]
... the last, or if the command's return value is being inverted with
!
(from man bash)
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Propagate all arguments in a bash shell script
...e script that calls another script, and I need to propagate the parameters from my current script to the script I am executing.
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Heap vs Binary Search Tree (BST)
... new elements are almost certain to go at the bottom
heap insertion starts from the bottom, BST must start from the top
In a binary heap, increasing the value at a given index is also O(1) for the same reason. But if you want to do that, it is likely that you will want to keep an extra index up-to...
Command-line Unix ASCII-based charting / plotting tool
...ke
line, not bar, plots ?)
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import division
import numpy as np
__version__ = "2015-01-02 jan denis"
#...............................................................................
def onelineplot( x, chars=u"▁▂▃▄▅▆▇█...
Installing python module within code
I need to install a package from PyPi straight within my script.
Maybe there's some module or distutils ( distribute , pip etc.) feature which allows me to just execute something like pypi.install('requests') and requests will be installed into my virtualenv.
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Redefine tab as 4 spaces
.... In practice, you probably want your tab character width to be different from the width of your indents, in order to reduce the chance of tab characters masquerading as proper indents. (list + expandtab can help here too) Also, 8-char-wide tabs is "the standard" -- your terminal, Python, and many ...
Is there a difference between using a dict literal and a dict constructor?
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I think you have pointed out the most obvious difference. Apart from that,
the first doesn't need to lookup dict which should make it a tiny bit faster
the second looks up dict in locals() and then globals() and the finds the builtin, so you can switch the behaviour by defining a loca...
How can I sort a dictionary by key?
What would be a nice way to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ?
I checked some posts but they all use the "sorted" operator that returns tuples.
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