Python in B4A is now a reality!

[wonder]

It's alive!!!!

 

[wonder]

Now with direct output!!!

 

[Erel]

Use smart strings:

Py.Execute($"
print 'hello world'

def fib(n):
     if n == 1 or n==2:
     ...
"$)

 

[wonder]

I tried, but the interpreter kept complaining about the indentation. I'll give it another go.

Edit: This works, but it breaks the B4A code's indentation.

'Example:
    Py.Execute($"
print 'hello world!'

def fib(n):
    if n == 1 or n == 2:      
        return 1
    return fib(n - 1) + fib(n - 2)

print fib(16)"$ _
    )

Anyway, this is just an example. Code can be entered from a text box as well.
I'll probably be able to post an example app this evening.

B4A plays well with C/C++, Java, PHP, SQL and now, even Python! Isn't it wonderful?

 

[Erel]

This works, but it breaks the B4A code's indentation.

B4A will not do anything with multiline strings. Just make sure not include any extra tabs in your code.

 

[wonder]

 

[thedesolatesoul]

Very nice.
Does it handle imports and have standard libraries?
There is an insane amount of python code out there, i wonder if its possible to setup a flask or django webserver with this.

 

[thedesolatesoul]

Well
Import sys
Sys.exit(0)
Worked!

Couldnt import anything else.

 

[OliverA]

i wonder if its possible to setup a flask or django webserver with this.

Like this? (https://blog.kivy.org/2016/05/android-apps-with-python-flask-and-a-webview/).

 

[thedesolatesoul]

I guess so.
Although i didnt think this through, it might sound like a html app but there is python behind it.
Python has great libraries for all the backend stuff like connecting to dbs, network, scraping.

 

[wonder]

I haven't had the time to experiment yet. I'll be writing the rest of the library during the weekend.
Regarding imports, TensorFlow would be cool...

 

[thedesolatesoul]

Tensorflow was indeed what I was thinking
Its a really cool idea, it lets you write and test the application logic separate from the ui.
Nice job once again.

 

[wonder]

Thanks!!! I think I'll start with some simple libraries like 're' or 'numpy'.
I'll have to dive into the CPython documentation: https://docs.python.org/2/c-api/import.html

 

[wonder]

Does it handle imports and have standard libraries?

It seems that, if we copy the modules we need into File.DirDefaultExternal, we'll be able to import them!

This code will be automated, so that all you need to write is:

import some_cool_module

 

[walterf25]

It's alive!!!!

View attachment 60408

Wow, i have been doing some Python coding myself lately, it's so nice to see this here, just more goodies for us, Yay!!!

 

[wonder]

For the ones interested, NinjaPython has officially been released!

Please give my library a test-drive:
https://www.b4x.com/android/forum/threads/ninjapython-cpython-interpreter.85220/#post-539824

Using it is as simple as:

Py.Initialize
Py.Exec(pythonCode)
Py.Finalize

If possible, please let me know if the test project works without problems and your device architecture (x86, ARM, ARMv7, ARMv8_64 or x86_64). Emulator results are also welcome.

I'm still figuring out a few things, namely 3rd party library support, but the current version is interesting and functional enough to do some really cool things.