IaroslavR

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys

def message(to,message=''):
	"""this a simple function to send a whatsapp message to your friends
	and group using python and selenium an automated tool to parse the HTML 
	content and to change the properties. 

IaroslavR

When are Python circular imports fatal?

In your Python package, you have:

• an __init__.py that designates this as a Python package
• a module_a.py, containing a function action_a() that references an attribute (like a function or variable) in module_b.py, and
• a module_b.py, containing a function action_b() that references an attribute (like a function or variable) in module_a.py.

This situation can introduce a circular import error: module_a attempts to import module_b, but can't, because module_b needs to import module_a, which is in the process of being interpreted.

But, sometimes Python is magic, and code that looks like it should cause this circular import error works just fine!

IaroslavR

with open("inFile.txt", 'r') as src, \  
    open("outFile1.txt", 'w') as out_1, \  
    open("outFile2.txt", 'w') as out_2:  
    for line in src.readlines():  
        out_1.writelines(line)  
        out_2.writelines(line)  

IaroslavR

[x.id for x
 in self.db.query(schema.allPostsUuid).execute(timeout=20)
 if x.type == 'post' 
    and x.deleted is not False
    and ...
    and ...]
#-----------------------------------------------------------------
transform = lambda x: x.id
results = self.db.query(schema.allPostsUuid).execute(timeout=20)
condition = lambda x: x.deleted is not False and ... and ...

IaroslavR

Reference: RFC 2616 - HTTP Status Code Definitions

• HTTP/1.1 Status Code Definitions
• Additional HTTP Status Codes

General

• 400 BAD REQUEST: The request was invalid or cannot be otherwise served. An accompanying error message will explain further. For security reasons, requests without authentication are considered invalid and will yield this response.
• 401 UNAUTHORIZED: The authentication credentials are missing, or if supplied are not valid or not sufficient to access the resource.
• 403 FORBIDDEN: The request has been refused. See the accompanying message for the specific reason (most likely for exceeding rate limit).
• 404 NOT FOUND: The URI requested is invalid or the resource requested does not exists.
• 406 NOT ACCEPTABLE: The request specified an invalid format.

IaroslavR

import logging
import re

from lawyers.spiders.common import CommonSpider, kayessian_intersection

class LawyerSpider(CommonSpider):
    name = 'robertsonshk'
    start_urls = ('http://www.robertsonshk.com/en/people', )
    common_fields = {
        'firm': 'Robertsons (HK)',

IaroslavR

Byobu Commands
==============

        byobu                              Screen manager


Level 0 Commands (Quick Start)
------------------------------

        <F2>                               Create a new window

IaroslavR

# oxygen missing
sudo apt-get install --reinstall oxygen-icon-theme
# ...и xxx пакетов не обновлено  http://forum.ubuntu.ru/index.php?topic=212330.0
sudo apt-get dist-upgrade
# Пакеты, которые будут оставлены в неизменном виде:  https://debianforum.ru/index.php?topic=5817.0
dpkg --get-selections | grep hold
echo имя_пакета install | sudo dpkg --set-selections

IaroslavR

import asyncio
import aiohttp

async def f(sem, client, url):
 async with sem:
    with async_timeout.timeout(5):
        async with client.get(url) as resp:
            print(resp.status)
            print(await resp.text())  # resp.context.read(1024)

IaroslavR

# prepare leveldb on CentOS 6
# https://techoverflow.net/blog/2012/12/14/compiling-installing-leveldb-on-linux/
# https://plyvel.readthedocs.org/en/latest/user.html

sudo yum install -y snappy-devel
cd ~
mkdir src
cd src
git clone https://code.google.com/p/leveldb/
cd leveldb/