alixedi

import fnmatch

from django import forms
from django.core.exceptions import ValidationError


class GlobField(forms.CharField):
    """
    Django does not support lookup type based on 
    [Glob](http://bit.ly/JkSbRZ). As a result, there

alixedi

Jitbit's SQL interview questions

http://www.jitbit.com/news/181-jitbits-sql-interview-questions/

Schema

employees

• employee_id
• department_id
• boss_id
• name

alixedi

from django import forms

from django_filters.filterset import FilterSet
from django_filters.widgets import RangeWidget
from django_filters.filters import Filter, RangeFilter


class CustomMultiValueField(forms.MultiValueField):
    widget = RangeWidget

alixedi

{
    "settings": {
        "icons" : true
    },

    "firstname": "Ali",

    "familyname": "Zaidi",

    "linkedin_id": "alixedi",

alixedi

# Source: https://mousebender.wordpress.com/2006/11/10/recursive-getattrsetattr/

def rec_getattr(obj, attr):
    """Get object's attribute. May use dot notation.

    >>> class C(object): pass
    >>> a = C()
    >>> a.b = C()
    >>> a.b.c = 4
    >>> rec_getattr(a, 'b.c')

alixedi

# The Ubuntu USB startup creator often crashes.
# This is an alternate way of doing the same process through the command line

# First plug in the USB pendrive. It will mount automatically

# Then check where it is (which device)
df

# Let's say we see it's in /dev/sdb1
# Then we have to use /dev/sdb and NOT /dev/sdb1

alixedi

Ali Zaidi

github.com/alixedi ~ alixedi.com ~ alixedi@gmail.com ~ SC & BPS

Technical Lead with 15 years of experience in building and managing teams, products and IP for startups, enterprise and public sector. Specializes in leading cross-functioning teams to timely delivery of data-intensive projects involving complex production systems.

Experienced in hiring and leading high-performance teams; Designing and managing technical roadmaps and roll-out strategies; Managing stakeholder relations; Agile and Lean Product Development; Delivery of Data Science outcomes in production.

Technologies: Python, Django, Flask, JavaScript, React, Docker, Kubernetes, Spark, PostgreSQL, Celery, AWS, Google Cloud Platform, GOV.UK PaaS, Prometheus, ELK, CI/CD etc.

alixedi

# -*- coding: utf-8 -*-
"""
    conveyor.conveyor
    ~~~~~~~~~~~~~~~~~

    Models a conveyor belt in software.

    Even for an interesting problem as this, I only had about an hour.
    Therefore, when weighing my options amongst:

alixedi

from math import sqrt
from random import sample
from datetime import datetime

def correlation(ser1, ser2):
    """Computes Pearson product-moment correlation coefficient for the given 2
    time series. See: http://bit.ly/1PHG1jy
    >>> from correlation import correlation
    >>> s1 = [random()*100 for i in range(100)]
    >>> _s1 = [100-s1[i] for i in range(100)]

alixedi

#from functools import lru_cache#python >=3.2
from functools32 import lru_cache#python 2.7
#from repoze.lru import lru_cache#python 2.7

#NOTE: you can use python -m trace --count fibonacci.py
#to see how many times each instruction is called

#@lru_cache(maxsize=500)#repoze.lru needs maxsize arg
@lru_cache()#using functools32
def fibonacci(n):