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Why I cannot cout a string?
...<iostream> but had forgetten <string>. I'm used to working on linux w/ gcc which would have complained that std::string is not defined. Your comment explains perfectly why we instead got the complaint about the operator. Thanks!!
– Daniel Goldfarb
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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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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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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...
How to use the pass statement?
I am in the process of learning Python and I have reached the section about the pass statement. The guide I'm using defines it as being a Null statement that is commonly used as a placeholder.
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How do I put a variable inside a string?
...t string via format codes (the %d in this case). For more details, see the Python documentation:
https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting
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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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usr/bin/ld: cannot find -l
...==============================================
attempt to open /usr/x86_64-linux-gnu/lib64/libzlib.so failed
attempt to open /usr/x86_64-linux-gnu/lib64/libzlib.a failed
attempt to open /usr/local/lib64/libzlib.so failed
attempt to open /usr/local/lib64/libzlib.a failed
attempt to open /lib64/libzli...
How do I calculate percentiles with python/numpy?
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By the way, there is a pure-Python implementation of percentile function, in case one doesn't want to depend on scipy. The function is copied below:
## {{{ http://code.activestate.com/recipes/511478/ (r1)
import math
import functools
def percentile(N...
Can't access RabbitMQ web management interface after fresh install
...hat just happened to me and caused me some headaches:
I have set up a new Linux RabbitMQ server and used a shell script to set up my own custom users (not guest!).
The script had several of those "code" blocks:
rabbitmqctl add_user test test
rabbitmqctl set_user_tags test administrator
rabbitmqct...