Dependency Injection Explained Like You’re 5 (with FastAPI Examples)

Learning dependency injection can be hard. In this simple FastAPI tutorial we will go over dependency injection and that Depends Keyword.
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#fastapi #dependencyinjection #python

[@codingwithroby]

There it is folks, dependency injection. What’s your biggest challenge as a developer right now?

[@CodePythonPro]

Great video Eric, I hope to built videos like this soon (to help python community in Spanish), thanks for sharing your knowledge.

[@codingwithroby]

You can do it 🙂 Just be ready for a ton of work and a lot of trial and error.

[@moinundin1221]

easy concept for spring boot dev

[@codingwithroby]

Dependency injection is all over the place in Spring Boot!

[@Wolfci]

More of these please lol just subbed great explanation

[@codingwithroby]

You bet! I got you

[@wait4015]

Could you make a video on how to use dependency injection without fastapi?

[@codingwithroby]

Fairly similar - easy way is to initialize the object you will need in the class and then call directly. class FrameworkClass(): def __init__(self, func): self.func = func def do_the_job(self): # some stuff self.func() def my_func(): # do whatever here

[@krishnaagarwal7934]

I love love love ur videoss❤❤❤

[@codingwithroby]

Aww thank you so much 😊

[@ankitmoura1467]

ok so whole point is to save resources and not create new instance on every api call ryt? but like when we create a new function which returns the new instance for us won't that fn be called on every api call and return a new instance i might be wrong but it feels like we r doing same thing with extra steps help?. also great content

[@yashasmn245]

Point was modular codebase, if you don't keep seperate function you would copy paste it every where . Makes easy to understand for everyone.

[@shafiq_ramli]

For once I thought DI is a security vulnerability like sqli 😅

[@codingwithroby]

ohhhh no!!! lol