[problem]-python3 can't run official website demo

[呂曜吉]

[problem]-python3 can't run official website demo

--------------------------------------------------------------------

i go to the site https://pythonhosted.org/pypng/ex.html#reading

and 

i try the example : "a little message" at python3 in command line on mac os

there is a error about TypeError: 'map' object is not subscriptable

so i guess  there is some wrong on this example

在此輸入代碼...
import png
s = ['110010010011',
     '101011010100',
     '110010110101',
     '100010010011']
s = map(lambda x: map(int, x), s)

f = open('png.png', 'wb')
w = png.Writer(len(s[0]), len(s), greyscale=True, bitdepth=1)
w.write(f, s)
f.close()

[David Jones]

On Wed, 19 Dec 2018 at 00:56, 呂曜吉 <ab123...@gmail.com> wrote:
>
> [problem]-python3 can't run official website demo
> --------------------------------------------------------------------
> i go to the site https://pythonhosted.org/pypng/ex.html#reading
> and
> i try the example : "a little message" at python3 in command line on mac os
> there is a error about TypeError: 'map' object is not subscriptable
> so i guess there is some wrong on this example

You are correct. The code was written years ago in Python 2 time.

Change the problematic line that contains map to

s = [[int(c) for c in row] for row in s]

I'll raise an issue and fix it.

David Jones

[呂曜吉]

thanks

by the way, i am finding some project to code
and, i think your project is fun.
so, how can i join the project?

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[David Jones]

On Thu, 20 Dec 2018 at 12:01, 呂曜吉 <ab123...@gmail.com> wrote:
>
> thanks
>
> by the way, i am finding some project to code
> and, i think your project is fun.
> so, how can i join the project?

Well, you found the pypng-users mailing list, that's a good start.

You can carry on by using PyPNG, reporting problems, and writing about
what you like or didn't like, what you found helpful and what you
found confusing.

Would be interesting to know some more about what you're doing with PyPNG.

Cheers,
drj