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How to load a tsv file into a Pandas DataFrame?
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154
Note: As of 17.0 from_csv is discouraged: use pd.read_csv instead
The documentation lists a .f...
Does Ruby regular expression have a not match operator like “!~” in Perl?
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156
Yes: !~ works just fine – you probably thought it wouldn’t because it’s missing from the ...
Why does multiprocessing use only a single core after I import numpy?
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150
After some more googling I found the answer here.
It turns out that certain Python modules (nu...
How to round to 2 decimals with Python?
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Boris
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answered Dec 8 '13 at 18:20
roliszrolisz
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Truncate a list to a given number of elements
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Dave Jarvis
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answered Aug 14 '09 at 18:42
Ben LingsBen Lin...
How to add image to canvas
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edited Feb 15 '18 at 21:38
answered May 15 '11 at 21:32
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How do you downgrade rubygems?
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edited Nov 5 '11 at 7:32
answered Feb 7 '09 at 21:33
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Run Cron job every N minutes plus offset
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529
To run a task every 20 minutes starting at 5 past the hour, try this:
5-59/20 * * * *
Expl...
Run an OLS regression with Pandas Data Frame
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5 Answers
5
Active
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How to create the most compact mapping n → isprime(n) up to a limit N?
...= 0:
return False
if n % 3 == 0:
return False
i = 5
w = 2
while i * i <= n:
if n % i == 0:
return False
i += w
w = 6 - w
return True
It's a variant of the classic O(sqrt(N)) algorithm. It uses the fact that a prime (exc...