B4A Library NinjaPython - Use Python Scripts in B4A

Work in progress - Work in progress - Work in progress - Work in progress - Work in progress

Work in progress - Work in progress - Work in progress - Work in progress - Work in progress

The NinjaPython B4A library brings you the ability of utilizing the Python language inside your B4A games and apps.
This can range from a few lines of code to entire scripts or object oriented modules, the choice is yours.

Spoiler: The Zen of Python

Quickstart:

- Switch 'Compilation Mode' to Release
- Download the library files and place them in your B4A external libraries folder.
- Option A: Download the resource files and place them in your project's Files folder.
- Option B: Download the test project below.
- See the 'usage' example below.​

Practice:

https://www.pythonanywhere.com/try-ipython/​

Features:

- CPython Interpreter 2.7.9
- Python Standard Library
- x86 and ARM compatible
- Ongoing development
​

Wishlist:

- Dedicated function calls
- Passing and returning B4A objects such as lists and maps
- Support for 3rd party libraries
​

Price (pay what you want):

- Free
- 2 beers
- 1 pizza
- 1 EVGA GeForce GTX 1080 Ti FTW3 GAMING
​

Test project:

- https://drive.google.com/open?id=0B3qpjqbKLKPRM2t0dHFYMEl4VmM​

KanBan board:

- https://trello.com/b/0Taq3CG8/ninjapython​

Library files (1.03):

- https://drive.google.com/open?id=0B3qpjqbKLKPRMXZ0bHREYnVJRnc​

Resource files:

- https://drive.google.com/open?id=0B3qpjqbKLKPRNnpPVDJ3T3U3NnM​

Usage:

Dim Py As NinjaPython
Py.Initialize
Py.Exec($"
def SayHello(subject):
    print 'Hello, ' + subject + '!'
"$)

...
...
...
...

Py.Exec("SayHello('world')") 'Outputs and returns 'Hello, world!'
Py.Finalize

​

Learn:

Spoiler: Learn Python In One Video

/SPOILER]

​

Enjoy!

 

[Husam]

Can you send me your B4A project?

https://drive.google.com/file/d/0B6vTmAv8ThXxc05ZWTBQRjZoYkU/view?usp=sharing

 

[wonder]

No issues here, I successfully imported the Regex module and displayed its contents.
Tested on two different devices (PC and Tablet).

Memu PC Emulator (x86):

Spoiler: Success

NVIDIA Shield Tablet K1 (ARM):

Spoiler: Success

Do you have the same issue with the Demo project?

 

[Husam]

No issues here, I successfully imported the Regex module and displayed its contents.
Tested on two different devices (PC and Tablet).

now its work, i just changed the compilation mode from debug to release

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
[NinjaPython] ARM CPU detected
[NinjaPython] Python 2.7.9 was successfuly installed in: /data/user/0/b4a.example/files
[NinjaPython] Initialized
[NinjaPython] In [1]:
SayHello('world')
[NinjaPython] Out[1]:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'SayHello' is not defined
[NinjaPython] Terminated
** Activity (main) Resume **

 

[wonder]

Glad to hear that!

Regarding your Python code, note that you are calling a function that was not previously declared. You need to define SayHello().

def SayHello(name):
    print "Hello, " + name + "!"

SayHello("world")

 

[wonder]

Here's an idea:

'You can keep your functions on a separate file, without executable code
Dim myPythonFunctions = File.ReadString(File.DirAssets, "myFunctions.py") As String

'Start the interpreter
Py.Initialize

'Load your functions into memory
Py.Exec(myPythonFunctions)
...
...
'Call a specific function whenever you want
Py.Exec("SayHello('World')")
Py.Exec("SayHello('Moon')")
Py.Exec("SayHello('Mars')")

'Finalize destroys the interpreter object, meaning
'your functions are no longer in memory
Py.Finalize

 

[Husam]

its time to learn python

 

[wonder]

Check the video posted at the end of the first post.
If you need any help, just ask!

 

[Meigionel TS]

Is it possible to import popular libraries like scikit (including numpy) and pyaudio yet?

 

[wonder]

In the version currently being developed, it is possible to import some libraries in zip format, but something like "pip install" doesn't work.

 

[Q Candiani]

Great work! I interest to use de psycopg2 library to connect to a postgresql database from my app. Is there any way to use it? I think it would be very powerful tool. Thank you very much

 

[walterf25]

Is this library only for B4A, or will it work in B4J?

Walter

 

[wonder]

Hi!! I'm back from the dead!

Is this library only for B4A, or will it work in B4J?

Nope, it's B4A only. On the PC you could just use regular Python, right?

 

[Cableguy]

Hi!! I'm back from the dead!

You never die while someone still remembers you!

Nope, it's B4A only. On the PC you could just use regular Python, right?

Just out of curiosity, how could python be integrated in a b4j project?

 

[DonManfred]

Just out of curiosity, how could python be integrated in a b4j project?

Sub StartTest
    Dim shl As Shell
    shl.Initialize("shl","python",Array("/.../.../test.py"))
    shl.RunWithOutputEvents(-1)
End Sub

Sub shl_StdOut (Buffer() As Byte, Length As Int)
    Dim Output As String = BytesToString(Buffer,0,Length,"UTF-8")
    Log(Output)
End Sub

Sub shl_StdErr (Buffer() As Byte, Length As Int)
    Dim Output As String = BytesToString(Buffer,0,Length,"UTF-8")
    Log(Output)
End Sub

 

[ilan]

Hi!! I'm back from the dead!

nice to see you again wonder. where have you been? undercover?

 

[wonder]

Hey Ilan! I'm doing alright, thanks!! How about you?
Well, I barely have time to dedicate myself to B4X nowadays, due to my current schedule.

I'm still working on some of my stuff, here and there.

 

[ilan]

I'm still working on some of my stuff, here and there.

Please dont abandon your 2d knight game. You must finish it. It is a master piece.

How about you

I am fine thanx. I also have very little time for coding. I switch job 1 month ago and i have lot of work in my new job so less time for my b4x projects but right now i am working on a b4a app that will make me rich.

(If i would get 1$ for everytime i thought this will be the one i really would be already rich)

 

[sorex]

are you still into CNC? or did you enter the world of IT as profession?

 

[ilan]

are you still into CNC? or did you enter the world of IT as profession?

CNC, but i am a cnc programmer so i do work with softwares.

 

[wonder]

Please dont abandon your 2d knight game. You must finish it. It is a master piece.

I won't! I've been learning GLSL and experimenting with shaders!

i am working on a b4a app that will make me rich

Ahahah!!! I really hope that day will come!!!


On a side note, this thread is about NinjaPython, so better if we can get back on topic before Erel gets mad.