PyInstaller: Package Python Applications (Windows, Mac and Linux)

PyInstaller is a program used to convert Python scripts into standalone applications. PyInstaller allows you to run applications written in Python on a computer without requiring the user to install Python. It is an excellent option when you need to distribute a program to the end user as a standalone application. PyInstaller currently only works […]

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py2exe: Python to exe Introduction

py2exe is a simple way to convert Python scripts into Windows .exe applications. It is an utility based in Distutils that allows you to run applications written in Python on a Windows computer without requiring the user to install Python. It is an excellent option when you need to distribute a program to the end […]

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Hashing Files with Python

Remember that a hash is a function that takes a variable length sequence of bytes and converts it to a fixed length sequence. Calculating a hash for a file is always useful when you need to check if two files are identical, or to make sure that the contents of a file were not changed, […]

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Hashing Strings with Python

A hash function is a function that takes input of a variable length sequence of bytes and converts it to a fixed length sequence. It is a one way function. This means if f is the hashing function, calculating f(x) is pretty fast and simple, but trying to obtain x again will take years. The value returned […]

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Finding Duplicate Files with Python

Sometimes we need to find the duplicate files in our file system, or inside a specific folder. In this tutorial we are going to code a Python script to do this. This script works in Python 3.x. The program is going to receive a folder or a list of folders to scan, then is going […]

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Advanced SQLite Usage in Python

Following the SQLite3 series, this post is about some advanced topics when we are working with the SQLite3 module. If you missed the first part, you can find it here. Using SQLite’s date and datetime Types Sometimes we need to insert and retrieve some date and datetime types in our SQLite3 database. When you execute […]

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Introduction to SQLite in Python

SQLite3 is a very easy to use database engine. It is self-contained, serverless, zero-configuration and transactional. It is very fast and lightweight, and the entire database is stored in a single disk file. It is used in a lot of applications as internal data storage. The Python Standard Library includes a module called “sqlite3″ intended […]

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