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Dictionaries and default values
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edited Jan 23 '19 at 5:30
Solomon Ucko
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What is the syntax rule for having trailing commas in tuple definitions?
...sts, or function arguments is good style especially when you have a long initialisation that is split over multiple lines. If you always include a trailing comma then you won't add another line to the end expecting to add another element and instead just creating a valid expression:
a = [
"a",
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Objective-C : BOOL vs bool
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From the definition in objc.h:
#if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned...
Python: avoid new line with print command [duplicate]
I've started programming today and have this issue with Python. It's pretty dumb but I can't figure out how to do it. When I use the print command, it prints whatever I want and then goes to a different line. For example:
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How to include external Python code to use in other files?
...ile, is there a way to include those files in another file, but call them without any prefix (i.e. file prefix)?
4 Answers
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Hash function that produces short hashes?
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You can use any commonly available hash algorithm (eg. SHA-1), which will give you a slightly longer result than what you need. Simply truncate the result to the desired length, which may be good enough.
For example, in Python:
>>> import hashlib
>>>...
django - why is the request.POST object immutable?
As the title asks, why did the Django guys decide to implement the request.POST object with a querydict (which, of course, in turn, makes the whole thing immutable?)
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Circular list iterator in Python
I need to iterate over a circular list, possibly many times, each time starting with the last visited item.
6 Answers
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How can I escape square brackets in a LIKE clause?
I am trying to filter items with a stored procedure using like. The column is a varchar(15). The items I am trying to filter have square brackets in the name.
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Django: ImproperlyConfigured: The SECRET_KEY setting must not be empty
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I had the same error and it turned out to be a circular dependency between a module or class loaded by the settings and the settings module itself. In my case it was a middleware class which was named in the settings which itself tried to load the se...