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How to write header row with csv.DictWriter?

...ion "functionality", I'd prefer to code it myself; that way you can report ALL "extras" with the keys and values, not just the first extra key. What is a real nuisance with DictWriter is that if you've verified the keys yourself as each dict was being built, you need to remember to use extrasaction=...
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How to import a module given the full path?

... path from its cache. In my case I aimed at creating a plugin system where all plugins implement a specific classX. I ended up using SourceFileLoader, note that its deprecation is controversial. – ComFreek Jul 3 '15 at 17:18 ...
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What is the best way to create constants in Objective-C

...he file in the Reddit-Prefix.pch file to make the constants available to all the files. Is it a good way of doing things? Also, I've done my research and found several methods to create constants, but I don't know which one to use: ...
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Python Unicode Encode Error

...80\x80abcd\xde\xb4' >>> u.encode('ascii') Traceback (most recent call last): File "<stdin>", line 1, in ? UnicodeEncodeError: 'ascii' codec can't encode character '\ua000' in position 0: ordinal not in range(128) >>> u.encode('ascii', 'ignore') 'abcd' >>> u.encode(...
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Transposing a NumPy array

...of a 1D array is still a 1D array! (If you're used to matlab, it fundamentally doesn't have a concept of a 1D array. Matlab's "1D" arrays are 2D.) If you want to turn your 1D vector into a 2D array and then transpose it, just slice it with np.newaxis (or None, they're the same, newaxis is just mor...
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How can I check for Python version in a program that uses new language features?

...rom the question that needed addressing is that a program must be syntactically correct for that version of python to even begin executing, so using new syntax precludes a program from starting on older versions of the interpreter. eval works around that – Autoplectic ...
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Immutable vs Mutable types

... Almost, but not exactly. Technically, all variables are passed by reference in Python, but have a semantics more like pass by value in C. A counterexample to your analogy is if you do def f(my_list): my_list = [1, 2, 3]. With pass-by-reference in C, the val...
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jQuery get value of selected radio button

...use you when you're used to seeing "" as the default value via the .val() call. – xji Jan 8 '18 at 22:30  |  show 1 more comment ...
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How to enumerate an object's properties in Python?

...oes not return dynamic members (i.e., object attributes and methods dynamically defined by that object's __getattr__() method or similar magic). In all likelihood, your desired file.ImplementationName property is defined dynamically and hence not available to vars() or dir(). –...
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“Unknown provider: aProvider

...that caused this issue, but I have since been able to find the problem manually. There was a controller function declared on the global scope, instead of using a .controller() call on the application module. So there was something like this: function SomeController( $scope, i18n ) { /* ... */ } ...