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How Pony (ORM) does its tricks?
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Pony ORM author is here.
Pony translates Python generator into SQL query in three steps:
Decompiling of generator bytecode and rebuilding generator AST
(abstract syntax tree)
Translation of Python AST into "abstract SQL" -- universal
list-based representation of a...
Find duplicate lines in a file and count how many time each line was duplicated?
...u can use the more verbose --count flag too with the GNU version, e.g., on Linux:
sort <file> | uniq --count
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Multiple levels of 'collection.defaultdict' in Python
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This is awesome. It seems I renew my marital vows to Python daily.
– mVChr
Nov 3 '14 at 22:32
3
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Add Variables to Tuple
I am learning Python and creating a database connection.
While trying to add to the DB, I am thinking of creating tuples out of information and then add them to the DB.
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Flatten an irregular list of lists
... your example a little easier to read and probably boost the performance.
Python 2
def flatten(l):
for el in l:
if isinstance(el, collections.Iterable) and not isinstance(el, basestring):
for sub in flatten(el):
yield sub
else:
yield el
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How to use the C socket API in C++ on z/OS
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I've had no trouble using the BSD sockets API in C++, in GNU/Linux. Here's the sample program I used:
#include <sys/socket.h>
int
main()
{
return AF_INET;
}
So my take on this is that z/OS is probably the complicating factor here, however, because I've never used z/OS bef...
Why do you need to create a cursor when querying a sqlite database?
I'm completely new to Python's sqlite3 module (and SQL in general for that matter), and this just completely stumps me. The abundant lack of descriptions of cursor objects (rather, their necessity) also seems odd.
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Get path of executable
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There is no cross platform way that I know.
For Linux: readlink /proc/self/exe
Windows: GetModuleFileName
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Usage of sys.stdout.flush() method
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Python's standard out is buffered (meaning that it collects some of the data "written" to standard out before it writes it to the terminal). Calling sys.stdout.flush() forces it to "flush" the buffer, meaning that it will wri...
Windows: XAMPP vs WampServer vs EasyPHP vs alternative [closed]
...an alternative, don't use Windows.
If your production servers are running Linux, why not run Linux on your development machine?
And if you don't want to (or cannot) install Linux on your computer, use a Virtual Machine.
sh...