Sarah Adina

1601581380

Manage Files and Database Connections in Python Like a Pro

In data engineering and data science, we frequently need to retrieve data from databases or flat files. However, using data from external resources without closing the connections to the underlying databases or files may lead to unwanted consequences. In this article, we discuss how to build custom context managers that help us work with those resources in a secure and efficient way.

Context managers

Thanks to the context managers, we can read data from external resources and rest assured that the connections to underlying databases or files are closed, even if we encounter some unhandled exceptions in our code.

#software-engineering #machine-learning #python #programming #data-science

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Manage Files and Database Connections in Python Like a Pro
Ray  Patel

Ray Patel

1619518440

top 30 Python Tips and Tricks for Beginners

Welcome to my Blog , In this article, you are going to learn the top 10 python tips and tricks.

1) swap two numbers.

2) Reversing a string in Python.

3) Create a single string from all the elements in list.

4) Chaining Of Comparison Operators.

5) Print The File Path Of Imported Modules.

6) Return Multiple Values From Functions.

7) Find The Most Frequent Value In A List.

8) Check The Memory Usage Of An Object.

#python #python hacks tricks #python learning tips #python programming tricks #python tips #python tips and tricks #python tips and tricks advanced #python tips and tricks for beginners #python tips tricks and techniques #python tutorial #tips and tricks in python #tips to learn python #top 30 python tips and tricks for beginners

Ray  Patel

Ray Patel

1619510796

Lambda, Map, Filter functions in python

Welcome to my Blog, In this article, we will learn python lambda function, Map function, and filter function.

Lambda function in python: Lambda is a one line anonymous function and lambda takes any number of arguments but can only have one expression and python lambda syntax is

Syntax: x = lambda arguments : expression

Now i will show you some python lambda function examples:

#python #anonymous function python #filter function in python #lambda #lambda python 3 #map python #python filter #python filter lambda #python lambda #python lambda examples #python map

Kaia  Schmitt

Kaia Schmitt

1626994800

How to Create Table in SQLite Database Python | Python Built-In Database - III

Create Table - Python Built-In Database - SQLite.

Github - https://github.com/theindianinnovation/Python-SQLite-Database-Tutorial

#sqlite #database #python #sqlite database python #database python

Kaia  Schmitt

Kaia Schmitt

1626998400

How to Insert Records in SQLite Database Python | Python Built-In Database - IV

Insert Records - Python Built-In Database - SQLite.

Github - https://github.com/theindianinnovation/Python-SQLite-Database-Tutorial

#database #python #sqlite database python #sqlite #database python

Art  Lind

Art Lind

1602666000

How to Remove all Duplicate Files on your Drive via Python

Today you’re going to learn how to use Python programming in a way that can ultimately save a lot of space on your drive by removing all the duplicates.

Intro

In many situations you may find yourself having duplicates files on your disk and but when it comes to tracking and checking them manually it can tedious.

Heres a solution

Instead of tracking throughout your disk to see if there is a duplicate, you can automate the process using coding, by writing a program to recursively track through the disk and remove all the found duplicates and that’s what this article is about.

But How do we do it?

If we were to read the whole file and then compare it to the rest of the files recursively through the given directory it will take a very long time, then how do we do it?

The answer is hashing, with hashing can generate a given string of letters and numbers which act as the identity of a given file and if we find any other file with the same identity we gonna delete it.

There’s a variety of hashing algorithms out there such as

  • md5
  • sha1
  • sha224, sha256, sha384 and sha512

#python-programming #python-tutorials #learn-python #python-project #python3 #python #python-skills #python-tips