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if A vs if A is not None:
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The statement
if A:
will call A.__nonzero__() (see Special method names documentation) and use the return value of that function. Here's the summary:
object.__nonzero__(self)
Called to implement truth value testing and the built-in operation ...
When does a process get SIGABRT (signal 6)?
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abort() is usually called by library functions which detect an internal error or some seriously broken constraint. For example malloc() will call abort() if its internal structures are damaged by a heap overflow.
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How to import classes defined in __init__.py
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wow, the word "helper" really starts to loose meaning in that example. However, you've shown me what I was looking for.
– scottm
Feb 24 '09 at 21:06
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Strip HTML from Text JavaScript
...h HTML from an untrusted source. To see why, try running strip("<img onerror='alert(\"could run arbitrary JS here\")' src=bogus>")
– Mike Samuel
Sep 22 '11 at 18:06
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FB OpenGraph og:image not pulling images (possibly https?)
...ta for images! We did try to do image:secure_url by itself and FB threw an error. We tried image & secure_url *in a number of ways) and linter showed no change whatsoever.
– Cyprus106
Jan 13 '12 at 23:35
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Do you continue development in a branch or in the trunk? [closed]
...st, just because, for example, someone checked in code containing a syntax error.
– Rob Wells
Jan 6 '11 at 12:02
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python multithreading wait till all threads finished
...oin method of Thread object in the end of the script.
t1 = Thread(target=call_script, args=(scriptA + argumentsA))
t2 = Thread(target=call_script, args=(scriptA + argumentsB))
t3 = Thread(target=call_script, args=(scriptA + argumentsC))
t1.start()
t2.start()
t3.start()
t1.join()
t2.join()
t3.join...
How to execute multi-line statements within Python's own debugger (PDB)
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It gives me "NameError: name 'interact' is not defined" when doing that.
– Jason
Dec 14 '17 at 4:10
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Iterate over model instance field names and values in template
...f that instance in table format, with the field name (verbose_name specifically if specified on the field) in the first column and the value of that field in the second column.
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How do I set/unset a cookie with jQuery?
...ready an object, so if you try to JSON.parse it, it will give a JSON parse error. Solved it with an "if typeof x == 'string'" do the JSON.parse, else, just use the object. 6 goddamn hours looking for the error in all the wrong places
– Andrei Cristian Prodan
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