GAID

Please enter the google analytics ID for appData file.

Delve into using Transcrypt to seamlessly translate Python code to JavaScript for coherent web projects, unifying Python's back-end strengths with JavaScript's front-end flexibility.

tarball.tar.gz

ch02

ch03

ch04

ch05

ch06

ch08

ch09

ch10

ch01

ch12

ch13

ch14

ch15

ch16

ch17

ch18

ch19

ch20

ch21

ch24

ch10-2

ch06-exercise

ch12-jsx

ch19-2

ch25-copy

Python is already used in the back-end of most web-based applications. However, it does not work with the front-end of web browsers in those applications. This is where Transcrypt comes in. Transcrypt can help create more coherent web-based projects where Python is used to write the back-end and front-end. This course is primarily about using a transpiler called Transcrypt. It translates our Python code to JavaScript and then executes that JavaScript, letting us enjoy the neatness of Python with the front-end flexibility of JavaScript.

Using the Python Transcrypt Transpiler for Front-end Coding

## Truthiness

There is a difference in truthiness between Python and JavaScript when it comes to empty lists, dictionaries, and sets. For example, in Python an empty list evaluates to `False`, whereas in JavaScript it evaluates to `True`. If we use the condition of a list being empty in an expression to determine program flow, we may not get the result we intended. As previously mentioned, the most straightforward and recommended way to deal with this difference in truthiness is to check if our list or dictionary has a length of zero. For example, the expression `len([]) > 0` will always evaluate to `False` in both Python and JavaScript. The second way is to use a Transcrypt compiler directive that tells the transpiler to explicitly use Python-based truthiness:


# Truthiness

There is a difference in truthiness between Python and JavaScript when it comes to empty lists, dictionaries, and sets. For example, in Python an empty list evaluates to `False`, whereas in JavaScript it evaluates to `True`. If we use the condition of a list being empty in an expression to determine program flow, we may not get the result we intended. As previously mentioned, the most straightforward and recommended way to deal with this difference in truthiness is to check if our list or dictionary has a length of zero. For example, the expression `len([]) > 0` will always evaluate to `False` in both Python and JavaScript. The second way is to use a Transcrypt compiler directive that tells the transpiler to explicitly use Python-based truthiness:


Use truthiness and types with Transcrypt.


Truthiness & Types

Use truthiness and types with Transcrypt.

Introduction

The Setup

Write a “Hello, World” Application

JavaScript Functions

Sourcemaps

External JavaScript Libraries

Intro to React

React Concepts

Cleaner Code

Managing JavaScript Packages

Package Bundler

Text Input

Lists

Forms

React Components

JavaScript Examples

CSS

Material-UI

Parcel Web Proxy

Asynchronous Requests

React Context Hook

Transcrypt Miscellany

Application Versioning

Google Analytics

Developer Tools

Appendix

Truthiness & Types

Truthiness