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How to count the number of files in a directory using Python
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os.listdir() will be slightly more efficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile():
import os, os.path
# simple version for working with CWD
print len([name for name ...
What is the best comment in source code you have ever encountered? [closed]
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1055
votes
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Get pandas.read_csv to read empty values as empty string instead of nan
...hat he doesn't want 'nan' to be treated as a default either. I've added a more complete explanation as a new answer.
– nealmcb
May 7 '17 at 14:55
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Can I use git diff on untracked files?
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100
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How to find index of all occurrences of element in array?
...TE: As per VisioN's comment, a simple for loop would get the same job done more efficiently, and it is easier to understand and therefore easier to maintain:
function getAllIndexes(arr, val) {
var indexes = [], i;
for(i = 0; i < arr.length; i++)
if (arr[i] === val)
ind...
Select all child elements recursively in CSS
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I know, it's a bit ugly. You could instead try writing more precise selectors, chances are, this would work too. (e.g. #head ul → #head ul#navi)
– anroesti
Feb 5 '11 at 22:46
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Hidden Features of Visual Studio (2005-2010)?
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95
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How to find all occurrences of a substring?
...n string function that does what you're looking for, but you could use the more powerful regular expressions:
import re
[m.start() for m in re.finditer('test', 'test test test test')]
#[0, 5, 10, 15]
If you want to find overlapping matches, lookahead will do that:
[m.start() for m in re.finditer...
What, why or when it is better to choose cshtml vs aspx?
...the MVC (Razor) templating framework is intended to return .Net pages to a more RESTful "web-based" platform of templated views separating the code logic between the model (business/data objects), the view (what the user sees) and the controllers (the connection between the two). The WebForms model ...
Why is January month 0 in Java Calendar?
...ain, Joda Time is simpler :) (The immutability factor makes things so much more pleasant to work with, too.)
– Jon Skeet
Dec 5 '08 at 17:26
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