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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.

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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

**(True or False)** In React, context variables are like state variables in that they can be updated.

(True or False) In React, context variables are like state variables in that they can be updated.

React context variables can hold which of the following?


React context variables can hold which of the following?

Context variables are added to an upper level of the component tree with the context Provider.


Context variables are passed down the component tree as a prop.


Context variables are imported into the module of a component.


Context variabls are created as state variables.


Context variables become available to components in a component tree when which condition is met?

Context variables become available to components in a component tree when which condition is met?

Given the following block of code, what will render in the web browser?

```py
CtxAnswer = createContext()

def MyComponent():
    answer = useContext(CtxAnswer)
    return el('div', None, f"The answer is {answer}")
def App():
    return el(CtxAnswer.Provider, {'value': 42},
            el(MyComponent, None)
        )

render(App, None, 'root')
```

Given the following block of code, what will render in the web browser?
<pre><code class="language-py">CtxAnswer = createContext()

def MyComponent():
 answer = useContext(CtxAnswer)
 return el('div', None, f&quot;The answer is {answer}&quot;)
def App():
 return el(CtxAnswer.Provider, {'value': 42},
 el(MyComponent, None)
 )

render(App, None, 'root')
</code></pre>

Quiz: React Context Hook

Quiz: React Context Hook

Test yourself on React's context hook with the quiz below.

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

Quiz on React Context Hook