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What is redash?
Redash is database viewer included BI tool inside. Redash has support for querying multiple databases, including: Redshift, Google BigQuery, PostgreSQL, MySQL, Graphite, Presto, Google Spreadsheets, Cloudera Impala, Hive and custom scripts.

Prerequisite :
1. Install docker 
2. Install git

git clone https://github.com/getredash/redash.git
docker-compose -f docker-compose.production.yml run --rm server create_db
docker-compose -f docker-compose.production.yml up

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Python @property inheritance the right way

Given a Parent class with value property, Child can inherit and overload the property while accessing Parent property getter and setter.

Although we could just reimplement the Child.value property logic completely without using Parent.value whatsover, this would violate the DRY principle and, more important, it wouldn't allow for proper multiple inheritance (as show in the example property_inheritance.py bellow).

Two options:

• Child redefines value property completely, both getter and setter.

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python
import os

__cwd__ = os.getcwd()
__location__ = os.path.realpath(
    os.path.join(__cwd__, os.path.dirname(__file__))
    )

print(f'location: {__location__}')
print(f'filename: {__file__}')

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Solving environment: done

## Package Plan ##

  environment location: /Users/leima/anaconda3

  removed specs:
    - numpy

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Python requests has 3 parameters: 1)Request URL
 2)Header Fields
 3)Parameter 
4)Request body

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# This is a really old post, in the comments (and stackoverflow too) you'll find better solutions.

def find(key, dictionary):
    for k, v in dictionary.iteritems():
        if k == key:
            yield v
        elif isinstance(v, dict):
            for result in find(key, v):
                yield result
        elif isinstance(v, list):

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$ cd /usr/local/lib
$ sudo ln -s ../../lib/libSystem.B.dylib libgcc_s.10.5.dylib
$ sudo ln -s ../../lib/libSystem.B.dylib libgcc_s.10.4.dylib

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An error occurred while installing nokogiri
(1.8.0), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.8.0'
--source 'https://rubygems.org/'` succeeds before
bundling.