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Django database query: How to get object by id?
Django automatically creates an id field as primary key.
6 Answers
6
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How can you profile a Python script?
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Python includes a profiler called cProfile. It not only gives the total running time, but also times each function separately, and tells you how many times each function was called, making it easy to determine where you should make optimizations.
You c...
What is the best regular expression to check if a string is a valid URL?
...script: alert('blah'). You need to do further validation on Uri.Scheme to confirm the http/https/ftp protocol is being used, otherwise if such a URL is inserted into your ASP.NET pages' HTML as a link, your users are vulnerable to XSS attacks.
– Yoshi
Aug 10 '...
How does _gaq.push(['_trackPageLoadTime']) work?
...precated and its functionality has been set as a default setting. (Functionally speaking, it has gone from being an opt-in feature to being an opt-out feature.)
_setSiteSpeedSampleRate is the new function for setting the sample rate on this feature; its default value is 1 (as in 1%). To opt out of ...
How to find the installed pandas version
...trouble with some of pandas functionalities. How do I check what is my installation version?
6 Answers
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What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
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int may be as small as 16 bits on some platforms. It may not be sufficient for your application.
uint32_t is not guaranteed to exist. It's an optional typedef that the implementation must provide iff it has an unsigned integer type of exactl...
bash string equality [duplicate]
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As @mak pointed out, == doesn't work in all shells, I confirmed that in Ubuntu 16.04 == doesn't work.
– Yingpei Zeng
Mar 16 '17 at 1:26
add a comment
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GUI Tool for PostgreSQL [closed]
... by just clicking on them, you have to open a popup for that; it even asks confirmation to remove a sort parameter! It might have improved compared to previous versions but it's still not recommended if you'd like to stay sane. I wish there was a free/libre GUI tool at the level of phpMyAdmin or Mys...
relative path in require_once doesn't work
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Note that you should manually include the trailing slash in after __DIR__. So: require_once(__DIR__.'/../class/user.php'); Per the documentation, the trailing slash is omitted except for the root directory.
– Ariel Allon
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Catching an exception while using a Python 'with' statement
... print 'oops'
If you want different handling for errors from the open call vs the working code you could do:
try:
f = open('foo.txt')
except IOError:
print('error')
else:
with f:
print f.readlines()
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