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How do I add multiple arguments to my custom template filter in a django template?

...[1,2,3,4] you will want a template filter that looks like this: {% if X|is_in:"1,2,3,4" %} Now we can create your templatetag like this: from django.template import Library register = Library() def is_in(var, args): if args is None: return False arg_list = [arg.strip() for arg ...
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List goals/targets in GNU make that contain variables in their definition

...ion would be to create a trivial makefile, dummy.mk, with these contents: __all_targets__: ; #no-op Now invoke make as make -p -f Makefile -f dummy.mk __all_targets__. On any substantial build, the difference in the amount of output generated by make is significant. For example: $ gmake -pn | ...
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How to prevent form resubmission when page is refreshed (F5 / CTRL+R)

... It seems to me that if you redirect to the same page, then $_POST is cleared. As I understand it, that was the desired effect. That was MY desired effect, anyway. I think the answer would be better if it made that explicit, though. – donutguy640 ...
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Locking a file in Python

...file locking (Linux, Ubuntu, MacOS, etc.) import fcntl, os def lock_file(f): fcntl.lockf(f, fcntl.LOCK_EX) def unlock_file(f): fcntl.lockf(f, fcntl.LOCK_UN) except ModuleNotFoundError: # Windows file locking import msvcrt, os def file_size(f): return o...
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How to get Linux console window width in Python

... rows, columns = subprocess.check_output(['stty', 'size']).split() is a little shorter, plus subprocess is the future – cdosborn Mar 17 '15 at 2:00 ...
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Minimizing NExpectation for a custom distribution in Mathematica

.... Let's extract it from your definition above into simple functions: pdf[a_, b_, m_, s_, x_] := (1/(2*(a + b)))*a*b* (E^(a*(m + (a*s^2)/2 - x))*Erfc[(m + a*s^2 - x)/(Sqrt[2]*s)] + E^(b*(-m + (b*s^2)/2 + x))*Erfc[(-m + b*s^2 + x)/(Sqrt[2]*s)]) pdf2[a_, b_, m_, s_, x_] := pdf[a, b, m, s, Log...
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How to drop column with constraint?

...'alter table tbloffers drop constraint ['+dc.NAME+N']' from sys.default_constraints dc JOIN sys.columns c ON c.default_object_id = dc.object_id WHERE dc.parent_object_id = OBJECT_ID('tbloffers') AND c.name = N'checkin' IF @@ROWCOUNT = 0 BREAK EXEC (@sql) END ...
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How to include external Python code to use in other files?

... You may interesting imp module and magic call __import__. – Vitold S. Dec 5 '15 at 23:53 ...
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How to run a program without an operating system?

...125\252' > main.img sudo apt-get install qemu-system-x86 qemu-system-x86_64 -hda main.img Outcome: Note that even without doing anything, a few characters are already printed on the screen. Those are printed by the firmware, and serve to identify the system. And on the T430 we just get a blank ...
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How can I get the behavior of GNU's readlink -f on a Mac?

...in your own script where you'd like to call readlink -f #!/bin/sh TARGET_FILE=$1 cd `dirname $TARGET_FILE` TARGET_FILE=`basename $TARGET_FILE` # Iterate down a (possible) chain of symlinks while [ -L "$TARGET_FILE" ] do TARGET_FILE=`readlink $TARGET_FILE` cd `dirname $TARGET_FILE` T...