Python Code Samples

Connect to mongo db using python and list of databases

kishore_kumar | 6 years, 1 month

import pymongo

client = pymongo.MongoClient("mongodb://localhost:27017")

pymongo python mongodb

Matrix transpose using list comprehensions in python

harika | 6 years, 2 months

a = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
#Procedure1:--------
transposed = [[row[i] for row in a ] fo

List comprehensions in python basically reduce the loc. Check the difference between two procudures

python matrix list

PYTHON: To download AWS ELB access log files from S3 bucket based on last modified time

Ramya | 5 years, 2 months

import boto3
import datetime
from datetime import datetime,timedelta,date

Before using this script, you need to set up AWS CLI first as below: ubuntu@ip-172-31-46-2:~$ aws

python boto3 s3

fetch all documents from mongo db collection using python

kishore_kumar | 6 years, 1 month

import pymongo

client = pymongo.MongoClient("mongodb://localhost:27017")

pymongo python mongodb

Usage of Operator functions instead of lambda functions

harika | 6 years, 2 months

import functools
import operator
list = [1, 2, 3, 4, 5]

Both lines generates the same result

lambda operator python

How to get the master IP Address of EMR Cluster

Reshma | 5 years, 9 months

import os
import boto3
session = boto3.Session(profile_name='aws_profile_name')

python aws ipaddress

How to connect to PostgreSQL database and display list of tables in python

kishore_kumar | 6 years, 1 month

import psycopg2

conn = psycopg2.connect(host="localhost", database="mydb", user="kishore", passwo

python psycopg2 postgresql

json string to python dictionary using json module

kishore_kumar | 6 years, 5 months

import json

my_str = '{"1": 4, "4": 2, "5":3 }'

python json

Python Script to create AWS beanstalk

sandeep | 6 years, 10 months

#!/usr/bin/python
  
import boto

python aws beanstalk

Difference between normal def defined function and lambda function in Python

Ramya | 5 years, 9 months

li = [4,65,65,23,86,343,75,3,7,5,87,34,56,64,90] 
final_list = list(filter(lambda x: (x%2 == 0) , l

lambda python

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