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Why is Python 3.x's super() magic?
In Python 3.x, super() can be called without arguments:
1 Answer
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Class constants in python
In python, I want a class to have some "constants" (practically, variables) which will be common in all subclasses. Is there a way to do it with friendly syntax?
Right now I use:
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Actual meaning of 'shell=True' in subprocess
...the shell are nontrivial, you now require the reader and maintainer of the Python script (which may or may not be your future self) to understand both Python and shell script. Remember the Python motto "explicit is better than implicit"; even when the Python code is going to be somewhat more complex...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...to functions as described in the section more on defining functions in the Python documentation.
The *args will give you all function parameters as a tuple:
def foo(*args):
for a in args:
print(a)
foo(1)
# 1
foo(1,2,3)
# 1
# 2
# 3
The **kwargs will give you all
keyword arg...
How do I override __getattr__ in Python without breaking the default behavior?
...behaviour
return object.__getattribute__(self, name)
See the Python docs for more.
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Python: Append item to list N times
This seems like something Python would have a shortcut for. I want to append an item to a list N times, effectively doing this:
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Bundler: Command not found
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For Arch Linux, use export PATH=$PATH:~/.gem/ruby/2.0.0/bin (adjust for your version of Ruby)
– Kostas Maragos
Aug 1 '13 at 15:03
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Find closing HTML tag in Sublime Text
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Thanks! Control + Alt + J works in Linux as well (tested under Linux Mint 14, Sublime Text 3)
– José Tomás Tocino
Apr 24 '14 at 16:07
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In Python, if I return inside a “with” block, will the file still close?
...e the finally block after a try block, i.e. it always executes (unless the python process terminates in an unusual way of course).
It is also mentioned in one of the examples of PEP-343 which is the specification for the with statement:
with locked(myLock):
# Code here executes with myLock hel...
sed command with -i option (in-place editing) works fine on Ubuntu but not Mac [duplicate]
... If you need the same script to work on both macOS (OS X, BSD) and Linux et al, then you must use a backup suffix (e.g. .bak) and you must attach it to the -i option — sed -i.bak …. If you don't do this, the script will not operate correctly on one of the two platforms. GNU sed does no...