AI on the Jetson Nano LESSON 45: Understanding Python Functions, Classes, Methods and Threading

[@HA-wo3we]

love your quick snappy jokes. Also love the fact you start the lesson by recapping the important info from previous lesson. This is surely the sign of a good teacher, thanks.

[@opalprestonshirley1700]

You sure can make confusing subjects easier to understand never dry and boring. Very enjoyable lesson. Have a great weekend.

[@ecassar1975]

Great lesson. I've been ages trying to understand what was happening in codes written by others, without much success, but now it all makes a lot of sense. It amazes me how you manage to simplify things so much with the examples you use in your tutorials. You are an ace. Thanks a lot for your time and dedication.

[@sanfinity_]

Great lesson very nicely explained sir. The way of making mistakes and rectifying them is what most of the courses and youtube tutorials lag and thats where Paul McWhorter sir leads.

[@nielsroetert]

All these lessons building up to this, so much cool stuff being introduced in this one, love how you're keeping it real and show that things don't always work as expected or what seems logical in our heads. On to the next lessons, after doing my homework that is.

[@paulmcwhorter]

More to come!

[@ricardobjorkeheim775]

Thank you Paul, the Threading part was great!

[@vaughntaylor2855]

Really appreciate the lesson Paul! Excellent work explaining classes!!!!

[@paulmcwhorter]

Glad it was helpful!

[@r1rmndz507]

I always get confuse with classes and methods but you have explained it very well! Thanks

[@paulmcwhorter]

Glad to hear that!

[@paulsavage4409]

Regarding the args=()...The args parameter takes a tuple. If you want to specify a tuple with one element, you must add the comma e.g., (var,) otherwise Python does not know it's a single-element tuple. If you are passing more than one element in the tuple you don't need the extra comma, as Python can identify that you are specifying a tuple.

[@paulmcwhorter]

Thanks for the explanation. It is unusual to ever see a dangling comma, but your explanation makes sense

[@quaternion-pi]

If you pass a list instead of a tuple to args, you don't need the dangling comma => args=[some_arg]

[@mohamadn6116]

Thanks for the explanation. I found this on the net to dive a little deeper: # Unwanted result: single_tuple_error = (0) print(single_tuple_error) print(type(single_tuple_error)) # 0 # . It thinks it is an int! # What we want single_tuple = (0, ) print(single_tuple) print(type(single_tuple)) # (0,) #

[@boxertwo]

Enjoying this stuff greatly!! Tried threading a while back and it was agonizing. Now I see it more clearly!!

[@marksholcomb]

Not being a Pro programmer, I have never fully understood Classes but this lesson helps clarify . Thanks. wonderful lesson.

[@Mircea007]

Hi Paul, Wow, this is so exciting, running pieces of code in parallel and not rely on the while loop order.

[@fptechreviews6394]

This is next level programming what they fail to teach you properly. Thank you Mr McWhorter.

[@ThuongPham-wg4bc]

Thank you. You made the complicated things clearly

[@paulmcwhorter]

Glad it helped!

[@epixexplorations]

excellent lesson really enjoyed this one.

[@MuhammadAhmad096]

The comma problem at 1:08:00 is because if we write (x), python automatically sees it as x. The comma is necessary so that python sees it as a tuple. (x , ) makes it a tuple with no second entry.

[@pralaymajumdar7822]

Extraordinary lesson.

[@paulmeistrell1726]

Well done Paul, interesting concepts delivered gently. ....I think the early morning thing affected your typing.....(

[@eranfeit]

Thank you for your wonderful lesson

[@bhavinpithawala3967]

you were right never ever edit out those mistake and debugging.. its impossible to code without those error.... thanks for sharing videos. still i feel refreshing to watch basics video after 15 years in programming . i just love coding..

[@everythingrobotics]

The threading part is really interesting. Maybe we can split the lists of image files taken from 'known' folder and get all encodings via threading. I'll try it.

[@CodingScientist]

Great lesson Paul

[@wishicouldarduino8880]

This stuff is tuff ! But I love it !even though I can't do that much compared to what I knew then and what I know now is almost night and day. I'm better at c sharp but I'm learning python more now ! And the beauty is ros uses both simultaneously ! 👍

[@markshepherd9942]

Thanks Paul, another great one. both my Pi cameras are working , but out of sync like yours. I've caught up! Can't wait for the next one, I will go and revise my functions and classes. Stay safe, I'm still locked down in London.

[@markshepherd9942]

I haven’t time travelled, this comment was meant for the previous lesson. See you on Sat

[@markomatesic5394]

Great lesson Paul, as always. Is it possible to use threading with single Pi camera to spread the frame grabbing and processing load to more than one thread? Is this even feasible (do we benefit in anything) and will there be a lesson on that in the future?

[@anthonybrigandi5653]

Great stuff

[@wayneswan3092]

I feel like we should have been been learning how to code like this from the beginning. While I understand the concepts, and the similarities between this way and the old way, I feel like I'm going to need a lot more lessons to really get this down. It's like learning an almost completely different coding language to me.

[@Bob-zg2zf]

👍🏻 You dah man, Paul. I wish the coding were done in C++.

[@keithemerson9349]

Great lesson!! Takes the mystery out of classes and threading. I really want to use threading.By the way. I was running two web cams and got a poor frame rate. Raspi cam + webcam and frame rate was even better than yours! Guess it depends on either frame size/res/ rate for each camera

[@paulmcwhorter]

definitely. If using a webcam, use the cv2.set command to set the frame size as if you dont do that no telling what you are getting. Also, make sure to call using /dev/video1 insteat of just '1'. Somewhere along the way that changed.

[@אלימאיר-ו7ק]

Thank you Paul, I get import error "cannot import nam Thread". what should i do ?

[@אלימאיר-ו7ק]

Solved: upgraded Python from 3.6 to 3.9

[@keithemerson9349]

Hi Paul,Went back to jetpack 4.3 but still not getting the frame rates you are with two cameras ??

[@RafeHarrison]

do a tour of your workbench

[@paulmcwhorter]

It is ugly. You dont want to see it. Believe me, not neat

[@Bob-zg2zf]

OOP features = inheritance, encapsulation, polymorphisim. Class is of data encapsulation. 😘

[@AlanHeigl]

we are adding turbo for our engine

[@MechDickel]

Thinking about a Jetson Nano for my robot dog...

[@chutchinson01450]

June seems kinda far out lol

[@paulmcwhorter]

I know. The natives are growing restless. The latest lessons I am doing are really cool. The thing is the material is really in depth, and takes me a long time to put together.

[@chutchinson01450]

Paul McWhorter ill just trust you to keep doing the good work then :)