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Frequency table for a single variable
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153
Maybe .value_counts()?
>>> import pandas
>>> my_series = pandas.Series([1,2...
Finding the average of a list
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On Python 3.4+ you can use statistics.mean()
l = [15, 18, 2, 36, 12, 78, 5, 6, 9]
import statistics
statistics.mean(l) # 20.11111111111111
On older versions of Python you can do
sum(l) / len(l)
On Python 2 you need to convert len to a float to get float division
sum(...
What is the easiest way to push an element to the beginning of the array?
...he array. ;)
– Phrogz
May 22 '11 at 15:45
3
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git working on two branches simultaneously
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Git 2.5+ (Q2 2015) supports this feature!
If you have a git repo cool-app, cd to root (cd cool-app), run git worktree add ../cool-app-feature-A feature/A. This checks out the branch feature/A in it's own new dedicated directory, cool-app-f...
Time complexity of Sieve of Eratosthenes algorithm
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ShreevatsaRShreevatsaR
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ASP MVC href to a controller/view
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answered Jun 2 '15 at 1:47
John SchroederJohn Schroeder
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Diff output from two programs without temporary files
...cmd "ls" "ls -a").
– Paul Lynch
May 15 '13 at 18:36
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Download and open PDF file using Ajax
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15 Answers
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Cannot change column used in a foreign key constraint
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Jacob Bond
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answered Nov 28 '12 at 13:58
Michel FeldheimMichel Feldheim
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Check whether a variable is a string in Ruby
...gsteenslag
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