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How do I create a list of random numbers without duplicates?
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edited Apr 2 '18 at 12:59
nbro
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Using Python String Formatting with Lists
I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list ...
Backporting Python 3 open(encoding=“utf-8”) to Python 2
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1. To get an encoding parameter in Python 2:
If you only need to support Python 2.6 and 2.7 you can use io.open instead of open. io is the new io subsystem for Python 3, and it exists in Python 2,6 ans 2.7 as well. Please be aware that in Python 2.6 (as well as 3.0) ...
Is there a way to measure how sorted a list is?
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142
You can simply count the number of inversions in the list.
Inversion
An inversion in a sequence ...
Converting a Pandas GroupBy output from Series to DataFrame
...ndex, though:
In [19]: type(g1)
Out[19]: pandas.core.frame.DataFrame
In [20]: g1.index
Out[20]:
MultiIndex([('Alice', 'Seattle'), ('Bob', 'Seattle'), ('Mallory', 'Portland'),
('Mallory', 'Seattle')], dtype=object)
Perhaps you want something like this?
In [21]: g1.add_suffix('_Count').re...
Understanding how recursive functions work
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2
I'm not too happy with thinking of it as a copy. I find that a more intuitive explanation is to differentiate the function itself (the code,...
How to get current route in Symfony 2?
How do I get the current route in Symfony 2?
13 Answers
13
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Query EC2 tags from within instance
Amazon recently added the wonderful feature of tagging EC2 instances with key-value pairs to make management of large numbers of VMs a bit easier.
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Logical operators (“and”, “or”) in DOS batch
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12 Answers
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how to return index of a sorted list? [duplicate]
...the sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
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