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Select 50 items from list at random to write to file
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If the list is in random order, you can just take the first 50.
Otherwise, use
import random
random.sample(the_list, 50)
random.sample help text:
sample(self, population, k) method of random.Random instance
Chooses k unique random elements from a population sequence.
Retu...
List files in local git repo?
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edited May 14 '16 at 0:34
Christopher Bottoms
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Finding the id of a parent div using Jquery
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answered Feb 13 '09 at 14:10
MarkMark
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Get a list of all the files in a directory (recursive)
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answered Oct 17 '10 at 18:30
Christoph MetzendorfChristoph Metzendorf
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What is the difference between '>' and a space in CSS selectors?
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220
A > B will only select B that are direct children to A (that is, there are no other elements ...
What makes Lisp macros so special?
...le syntax for a common case. The line
divisibleByTwo = [x for x in range(10) if x % 2 == 0]
yields a list containing all even numbers between 0 and 9. Back in the Python 1.5 days there was no such syntax; you'd use something more like this:
divisibleByTwo = []
for x in range( 10 ):
if x % 2 ...
What does it mean for a data structure to be “intrusive”?
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107
An intrusive data structure is one that requires help from the elements it intends to store in ...
What is the proper #include for the function 'sleep()'?
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edited Dec 10 '19 at 10:16
Daniel Selvan
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answered Fe...
SQL query to group by day
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if you're using SQL Server,
dateadd(DAY,0, datediff(day,0, created)) will return the day created
for example, if the sale created on '2009-11-02 06:12:55.000',
dateadd(DAY,0, datediff(day,0, created)) return '2009-11-02 00:00:00.000'
select sum(amount) as total, ...
Convert data.frame column format from character to factor
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201
Hi welcome to the world of R.
mtcars #look at this built in data set
str(mtcars) #allows you ...