On this gist I would like to point out an aspect of Python that might present some issues if it is not implemented correctly.
Suppose we have a function and we need to define that some of its parameters take an empty list as a default argument. Something like the following, for example, might be a typical implementation:
A collection of shell scripts for common repetitive tasks, that might come in handy.
| #!/usr/bin/env python3 | |
| """ | |
| Sunday 05 April, 2015 - Buenos Aires, Argentina | |
| Python 3.4 | |
| Computes the date for the Gregorian Easter by using | |
| Gauss's formula. | |
| """ | |
| from datetime import date | |
This file should summarize some important points to take into account in order to achieve a clean code base, enumerating not only style traits but also tips that might make the code more readable and maintainable.
1. PEP8_ with criteria: for example if a line goes beyond 80 cols, but breaking it would make an ugly code, or if the exceeding part is trivial (a comma, brackets, etc.), then leave it as it is, do not make pointless trims.
| # -*- mode: ruby -*- | |
| # vi: set ft=ruby : | |
| # | |
| Vagrant.configure(2) do |config| | |
| # This is an image of Ubuntu 14.04 LTS with libvirt support | |
| config.vm.box = "baremettle/ubuntu-14.04" | |
| config.vm.provision :shell, path: "provision.sh" | |
| # config.vm.synced_folder "../data", "/vagrant_data" |
| class Top(object): | |
| pass | |
| class A(Top): pass | |
| class B(Top): pass | |
| class A1(A): pass |
| /* | |
| Code below can be run directly into LINQPad - https://www.linqpad.net/ | |
| Return the owner and repo name of the most starred project with more than 100 contributors, for each language | |
| The declarative implementation can be solved using the Select, Where, Aggregate and GroupBy LINQ extension methods | |
| */ | |
| void Main() | |
| { | |
| var repos = new List<Repo> { |
| """ | |
| Object that allows chaining functional programming operations | |
| over a provided data set. | |
| """ | |
| from operator import add | |
| from functools import partialmethod, reduce | |
| class ChainedFunctional: |
| // Run PostgreSQL server: | |
| // docker run -e POSTGRES_PASSWORD="" -p 5432:5432 postgres | |
| // Monitor running processes: | |
| // watch -n 1 'echo "select pid,query_start,state,query from pg_stat_activity;" | psql -h localhost -U postgres | |
| // | |
| // For all handlers, call to db takes 5 seconds, | |
| // | |
| // Three endpoints: | |
| // - "/" - take 5 seconds | |
| // - "/ctx" - take 1 seconds, due to 1 second cancellation policy |
