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Python element-wise tuple operations like sum
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138
import operator
tuple(map(operator.add, a, b))
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Pandas - How to flatten a hierarchical index in columns
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edited Jan 17 '14 at 19:36
answered Jan 24 '13 at 18:37
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Fastest hash for non-cryptographic uses?
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13 Answers
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Is there a NumPy function to return the first index of something in an array?
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13 Answers
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Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
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203
This generally happens when you try login from different time zone or IP Address Computer. Your ...
When is SQLiteOpenHelper onCreate() / onUpgrade() run?
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359
SQLiteOpenHelper onCreate() and onUpgrade() callbacks are invoked when the database is actuall...
What is the best way to convert an array to a hash in Ruby
...y keys or values!
Building on @John Topley's popular answer, let's try:
a3 = [ ['apple', 1], ['banana', 2], [['orange','seedless'], 3] ]
h3 = Hash[*a3.flatten]
This throws an error:
ArgumentError: odd number of arguments for Hash
from (irb):10:in `[]'
from (irb):10
The constru...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
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3446
With new_list = my_list, you don't actually have two lists. The assignment just copies the re...
Redirect website after certain amount of time
... a function on a website where it says it will redirect you to the site in 3 seconds or so?
7 Answers
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Matrix Transpose in Python
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310
Python 2:
>>> theArray = [['a','b','c'],['d','e','f'],['g','h','i']]
>>> zi...