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Content

• Lifecycle Methods

Short notes

• Mounting means putting elements into the DOM.

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Content:

• Closures
• Callback
• Arrow function
• Var vs Let vs Const
• Spread Operator
• Rest Operator
• SetInterval vs Settimeout
• Map vs Set
• MAP vs OBJECT

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Python Important topics

Click ⭐if you like the project. Pull Request are highly appreciated.

Table of Contents

No.	Questions
1	Why python is not support Overloading concept?

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/*
* Handle Django serializers errors and return error in html (ul/li) format.
*
* Error structure examples
*   // The most simple case
*   { detail: "Authentication is required" }
*   
*   // Simple form validation error
*   { title: ["This field is required."], "description": ["This field is required."]}
*

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from django.db import models

class AbstractDateTime(models.Model):
    '''
    Abstract model for created_on and updated_on field in models
    '''

    created_on = models.DateTimeField(auto_now_add=True)
    updated_on = models.DateTimeField(auto_now=True)

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# setting.py file
'''
JS logger configuration used in application
'''

LOGGING = {
    'version': 1,
    'disable_existing_loggers': True,
    'formatters': {
        'standard': {

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'''
  Ref blog
    - https://www.programiz.com/python-programming/user-defined-exception
    - https://stackoverflow.com/questions/1319615/proper-way-to-declare-custom-exceptions-in-modern-python
'''

# Basic use
class CustomError(Exception):
    pass

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pip install boto3
python manage.py runserver
pip install awscli

aws --version
aws configure # set configuration of user
aws s3 ls # get listing of all buckets

aws s3 ls s3://imageprocess-python/ # access certain bucket

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# check attachment files
# find_distance.py
import os
from datetime import datetime

import googlemaps
from django.conf import settings

from packages.common_func import get_or_none, convert_float
from network.models import Distance, LatLong

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# -*- coding: utf-8 -*-
"""
Created on Sat Jun  8 17:19:13 2019

@author: 63315
"""

import googlemaps
from datetime import datetime