Journal | Jason R Briggs

Breaking out of loops

Sherry W writes (excerpted):

Excellent book so far for my grandson.

On page 78 should it read?:

while True:
    lots of code here
    lots of code here
    lots of code here
    if some value == False
        break

Book is written very well for that age group. It’s great to h...

Tkinter colorchooser problems (revisited)

Suranga writes:

My son and I have been learning Python with your great book. Unfortunately, we hit an issue with Colorchooser - the problem appears identical to this one: https://jasonrbriggs.com/journal/2013/05/01/tkinter-colorchooser-problems.html In the solution, you suggest we revisit Ch...

I was reading Tim Bray's recent blog posts (here and here) about his Topfew utility with interest, and wondered how my go-to systems programming language (Nim) stacks up compared to Go. I knocked up a quick and dirty implementation and then ran against a 900MB access_log from my own site...

Problem with bouncing ball

Lennier M writes:

I am on page 202 of your book, but when I followed your instructions, the ball stopped moving, instead of moving in multiple directions. Here is my code:

class Ball:
    def __init__(self, canvas, color):
        self.canvas = canvas
        self.id = canvas.create_oval(...

Long and short dashes

Jan vK writes:

here’s an example from your book that gives an error: count_down_by_twos = list(range(40, 10, −2)) SyntaxError: invalid character in identifier please inform me how to solve this problem

It looks like you might have copied-and-pasted the code? Perhaps from the digital version...

Problems with restarting the game

Serhii writes (excerpted from two emails):

I teach programming lessons for the pupils. We try to do restart button for the “Bounce” as it follows: jasonrbriggs.com/journal/2014/09/03/restarting-the-game.html ...there is a problem in “command=restart”.

If I run your code I get the followi...

IDLE3 on Ubuntu

Chris K writes (excerpted):

I'm teaching myself and home educating my three young daughters at the same time. Just a little bit every day (excepting Sunday which is entirely reserved for pancakes and not inter-computery-things) . Thank you for providing the opportunity for me to introduce the ...

Not the normal knock off

Usually on Amazon, we see Python for Kids knock-offs which are an exact copy of the book, with cruddy printing and/or binding. No Starch have a clever binding which allows books to open flat, without falling apart after reading a couple of chapters (clever enough that a few people thought it was...

String Formatting

Lou O writes:

Hi Jason, Read a few good reviews of your book on Amazon. One of the reviews pointed out “The explanation of String formatting needs to be updated. We don’t do embedded values using %s anymore. I recommend skipping the chapters on Turtle Graphics and tkinter. The introductory...

Bouncing in Polski

Marzena writes:

I’m writing to you because neither me nor my 11-year old daughter with whom we’re learning Python can figure out where the problem is. We get the following error:
================ RESTART: C:/Users/Enarpol/Desktop/brajan.py ================
Traceback (most recent call last):
...

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