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Parse config files, environment, and command-line arguments, to get a single collection of options
Python's standard library has modules for configuration file parsing ( configparser ), environment variable reading ( os.environ ), and command-line argument parsing ( argparse ). I want to write a program that does all those, and also:
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ValueError: setting an array element with a sequence
This Python code:
8 Answers
8
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how to reference a YAML “setting” from elsewhere in the same YAML file?
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Yes, using custom tags. Example in Python, making the !join tag join strings in an array:
import yaml
## define custom tag handler
def join(loader, node):
seq = loader.construct_sequence(node)
return ''.join([str(i) for i in seq])
## register the ta...
What are important languages to learn to understand different approaches and concepts? [closed]
... reconsider. You've gotten some functional exposure with Clojure and even Python, but you've not experienced it to its fullest without Haskell. If you're really against Haskell then good compromises are either ML or OCaml.
Declarative, Datalog - Many people would recommend Prolog in this slot, bu...
“message failed to fetch from registry” while trying to install any module
...xtra steps. Example install:
sudo apt-get update
sudo apt-get install -y python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs
After that, npm was already included and worked perfectly.
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How to clear the interpreter console?
Like most Python developers, I typically keep a console window open with the Python interpreter running to test commands, dir() stuff, help() stuff , etc.
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Multiple commands in gdb separated by some sort of delimiter ';'?
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You can do this using the python integration in gdb.
It would be nice if s ; bt stepped and then printed a backtrace, but it doesn't.
You can accomplish the same thing by calling into the Python interpreter.
python import gdb ; print(gdb.execute("s...
Can't install PIL after Mac OS X 10.9
...'ve just updated my Mac OS to 10.9 and I discovered that some (all?) of my Python modules are not here anymore, especially the Image one.
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Force line-buffering of stdout when piping to tee
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For python script stdbuf will not work, but you can use -u to disable buffering on python's side: python3 -u a.py | tee output.txt
– Honza
Jan 2 at 13:56
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best way to preserve numpy arrays on disk
...storing large numpy arrays. There are two options for dealing with hdf5 in python:
http://www.pytables.org/
http://www.h5py.org/
Both are designed to work with numpy arrays efficiently.
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