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"""Descriptors & Decorators
Example 2: A decorator that changes the signature of the function.
"""
from functools import wraps


class DomainObject:
    """Dummy object that requires the common parameters for processing"""
    def __init__(self, *args):
        self.args = args

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"""An example of a descriptor with a ``__delete__()`` method.
The code is for illustration purposes only, and it does not correspond to any
actual implementation.
"""


class ProtectedAttribute:
    """A class attribute that can be protected against deletion"""

    def __set_name__(self, owner, name):

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"""Mutable objects as class attributes."""
import logging

logger = logging.getLogger(__name__)


class Query:
    PARAMETERS = {"limit": 100, "offset": 0}

    def run_query(self, query, limit=None, offset=None):

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"""A small script to find all months that have a Monday 25th for a particular
year.
Input: year in format YYYY
Output: print list of dates that are a Monday 25 in that year
"""
import re
import sys
from typing import Iterator
from datetime import date

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gRPC Python: Instructions for Local Development

Note: The compilation of the C files (make) requires GCC version 7. Maybe LLVM?

1. Git clone & init the project

git clone ...
git submodule update --init

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Aio gRPC

A Proposal from the user's perspective

As a user, to use the new implementation of gRCP in the asynchronous version, I will compile by passing a specific flag:

$ python -m grpc_tools.protoc -I. --python_out=. --grpc_python_out=. proto/echo.proto --aiogrpc

This compiles the stubs, generated with the asynchronous code.

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"""Code for the talk "Discovering Descriptors"
> PyCon CZ 2017 - 8 to 10 June - Prage, Czech Republic
June 9th, 2017 11:00 CET

> EuroPython 2017 - 9 to 16 July - Rimini, Italy
July 11th, 2017 15:45 CET
https://ep2017.europython.eu/conference/talks/discovering-descriptors

Python 3.6

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// 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

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"""
Object that allows chaining functional programming operations
over a provided data set.
"""
from operator import add
from functools import partialmethod, reduce


class ChainedFunctional:

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/*
    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> {