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How Does Modulus Divison Work
... (where the fractional part of the result after dividing is discarded). In Python 3: 16 // 6 >>> 2 and 16 / 6 >>> 2.6666666666666665
– bryik
Nov 6 '16 at 20:30
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Print number of keys in Redis
...ndom, then checking what fraction of them matches the pattern.
Example in python; counting all keys starting with prefix_:
import redis
r = redis.StrictRedis(host = 'localhost', port=6379)
iter=1000
print 'Approximately', r.dbsize() * float(sum([r.randomkey().startswith('prefix_') for i in xrange(...
How do you return the column names of a table?
... SQL context, but is a succinct approach when connecting to a database via Python/Java/C/etc.
– Arthur Hebert
Mar 29 '19 at 17:53
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Get month name from number
...ime.now()
mydate.strftime("%B")
Returns: December
Some more info on the Python doc website
[EDIT : great comment from @GiriB] You can also use %b which returns the short notation for month name.
mydate.strftime("%b")
For the example above, it would return Dec.
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Why can't I stop vim from wrapping my code?
I can't stop vim from wrapping my Python code. If I enter :set nowrap like a champ, but it still wraps.
9 Answers
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How do I find numeric columns in Pandas?
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By far the most Pythonic way, yes.
– jorijnsmit
Apr 19 at 8:40
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Dictionary text file [closed]
...ou can use aspell to do the dictionary checks, it has bindings in ruby and python. It would make your job much simpler.
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Regular expression to stop at first match
...ilable in regex engines which implement the Perl 5 extensions (Java, Ruby, Python, etc) but not in "traditional" regex engines (including JavaScript, Awk, sed, grep without -P, etc).
– tripleee
Jul 8 at 17:52
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Removing index column in pandas when reading a csv
...sing pandas. I have to perform some arithmetic on each of the columns and python wasn't liking have the index column attached. Pandas is certainly the easiest way to import data but not always the best I found out.
– Bogdan Janiszewski
Nov 21 '13 at 17:15
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How to get the parent dir location
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Use relative path with the pathlib module in Python 3.4+:
from pathlib import Path
Path(__file__).parent
You can use multiple calls to parent to go further in the path:
Path(__file__).parent.parent
As an alternative to specifying parent twice, you can use:
Path(...