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Running Bash commands in Python
...h are commonly overlooked.
Prefer subprocess.run() over subprocess.check_call() and friends over subprocess.call() over subprocess.Popen() over os.system() over os.popen()
Understand and probably use text=True, aka universal_newlines=True.
Understand the meaning of shell=True or shell=False and ho...
LINQ query to select top five
... answered Feb 2 '11 at 9:57
GidonGidon
16.8k55 gold badges4242 silver badges6363 bronze badges
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CSS media queries: max-width OR max-height
...riting. It's been a good chance to learn myself! Take the time to systematically read though and I hope it will be helpful.
Media Queries
Media queries essentially are used in web design to create device- or situation-specific browsing experiences; this is done using the @media declaration withi...
What should I do if two libraries provide a function with the same name generating a conflict?
... either of them you can wrap one of them up. That is compile another (statically linked!) library that does nothing except re-export all the symbols of the original except the offending one, which is reached through a wrapper with an alternate name. What a hassle.
Added later: Since qeek says he's t...
How to retrieve a module's path?
... # "print(os.getcwd())" still works fine
Traceback (most recent call last): # but __file__ doesn't exist if bar.py is running as main
File "/path2/bar.py", line 3, in <module>
print(__file__)
NameError: name '__file__' is not defined
Hope this helps. This caveat cost me a ...
How can I alter a primary key constraint using SQL syntax?
...nstraint name: ALTER TABLE db.table DROP PRIMARY KEY, ADD PRIMARY KEY (id1, id2);
– karsten314159
Dec 13 '18 at 12:24
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'this' vs $scope in AngularJS controllers
...ers?"
Short answer:
this
When the controller constructor function is called, this is the controller.
When a function defined on a $scope object is called, this is the "scope in effect when the function was called". This may (or may not!) be the $scope that the function is defined on. So, ins...
TypeError: 'module' object is not callable
...'>
This is what the error message means:
It says module object is not callable, because your code is calling a module object. A module object is the type of thing you get when you import a module. What you were trying to do is to call a class object within the module object that happens to have...
How to organize large R programs?
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If you're growing your source-tree/analysis "organically," don't you find this hard to do/cumbersome? If you notice a mistake in your code (common while exploring a new problem space), you have to (i) fix source; (ii) reinstall package; (iii) reload it into your workspace? I...
Ruby: Calling class method from instance
In Ruby, how do you call a class method from one of that class's instances? Say I have
9 Answers
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