Unable to follow chaquopy-getting-started guide

[Raghu17s]

Hi,

I am following the steps provided at https://chaquopy-getting-started.readthedocs.io/index.html
but I am getting multiple errors while running the app. The screenshot of error is attached.

[mhsmith]

https://chaquopy-getting-started.readthedocs.io is an unofficial guide written by someone else, and is now well out of date. I suggest you work from the official documentation instead.

If you still have issues, please post the full build log. You can switch the Build window to text mode by clicking the "toggle view" button (below the green "build" button on the left side of your screenshot).

[Raghu17s]

Dear Malcolm, Thanks for the support. Do you have any video tutorials for the same? It's hard for beginners to follow these steps.

…

On Fri, Nov 8, 2019 at 4:06 PM Malcolm Smith ***@***.***> wrote: https://chaquopy-getting-started.readthedocs.io is an unofficial guide written by someone else, and is now well out of date. I suggest you work from the official documentation <https://chaquo.com/chaquopy/doc/current/index.html> instead. If you still have issues, please post the full build log. You can switch the Build window to text mode by clicking the "toggle view" button (below the green "build" button on the left side of your screenshot). — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#164?email_source=notifications&email_token=AIIYLWLJ2OJLVMSMQTPFFH3QSU6MVA5CNFSM4JKSI5X2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDP7MLA#issuecomment-551548460>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIIYLWJKYFZSNQ2ECGLPYR3QSU6MVANCNFSM4JKSI5XQ> .

-- Best regards Raghu S Ph.D. Student at Maastricht University Mob: +919611044640 *LinkedIn <http://www.linkedin.com/in/s-raghu-21832436>*

[mhsmith]

We don't have any video tutorials. But if you're a beginner, then rather than creating a new app from scratch, the easiest way for you to get started would be to copy one of the open-source example apps linked here.

[Raghu17s]

Hi Malcolm, I have downloaded chaquopy-hello <https://github.com/chaquo/chaquopy-hello> and imported it in an android studio. I have installed python plugin too. While running the app it shows en error Excetutable is not specified. The following error shows in "edit configuration" whale running. [image: image.png]

…

On Tue, Nov 12, 2019 at 4:25 PM Malcolm Smith ***@***.***> wrote: Closed #164 <#164>. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#164?email_source=notifications&email_token=AIIYLWOKSAHDDIXSYMLZPHTQTKDSDA5CNFSM4JKSI5X2YY3PNVWWK3TUL52HS4DFWZEXG43VMVCXMZLOORHG65DJMZUWGYLUNFXW5KTDN5WW2ZLOORPWSZGOUZNY3MQ#event-2791017906>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIIYLWNKSIL73XQTBRCX7WDQTKDSDANCNFSM4JKSI5XQ> .

-- Best regards Raghu S Ph.D. Student at Maastricht University Mob: +919611044640 *LinkedIn <http://www.linkedin.com/in/s-raghu-21832436>*

[mhsmith]

You can't send images to GitHub via email. Upload them on the website by dragging them into the text box.

[Raghu17s]

have downloaded chaquopy-hello and imported it in an android studio. I have installed python plugin too. While running the app it shows en error Excetutable is not specified.

The following error shows in "edit configuration" whale running.

[mhsmith]

The Python plugin in Android Studio will only provide basic syntax highlighting, and internal navigation within a file. It can't be used to actually run your code. Since the project is an Android app, you'll have to run it by installing that app on a device or emulator.

Normally this would be done using a run configuration with the type "Android app" and the name "app", but this isn't showing in your screenshot, so I think you must have opened the project in the wrong way. Specifically, the root directory of your project should be the root directory of the Git repository, but your screenshot is showing one level above that.

Just choose File > Open and select the root directory of the repository (the directory immediately above "app" and "gradle").

[Raghu17s]

Hi Smith,

Great!
Yes, It's working now. I have installed it on my device.
My aim is to load the .csv file and do some feature extraction and a bit of machine learning (SVM) using the app and display the results. I have the working model written in python.

I tried steps discussed at chaquo/chaquopy-hello#2
but I am unable to find MainActivity.java. to call my python file.
The one which is under "build" shows "files under the build folder are generated and should not be edited.

TIA

[mhsmith]

If you have an existing text-based Python script, then it would be easier to start with the console template instead. In fact, from your screenshot above, it looks like you were already doing that before.

[Raghu17s]

Great, it's working now.
I hope this will solve my need.

I have few more quaries

1. How can I make a push button to load csv file from the folder? And I need to access that data into my Python file.

2. When I do install "scikit-learn" in pip, I am getting this error.
   ERROR: Process 'command 'py'' finished with non-zero exit value 1. For full details, open the 'Build' window and switch to text mode with the 'Toggle view' button on the left.

[mhsmith]

How can I make a push button to load csv file from the folder?

You'd have to create an Android activity, for which there are many tutorials elsewhere. I recommend you program the UI in Java or Kotlin and access Python through the PyObject API, as demonstrated here. However, if you wish, you can also write the whole activity in Python, as demonstrated here.

And I need to access that data into my Python file.

See #144.

When I do install "scikit-learn" in pip, I am getting this error.
ERROR: Process 'command 'py'' finished with non-zero exit value 1. For full details, open the 'Build' window and switch to text mode with the 'Toggle view' button on the left.

Please provide the "full details" as the message says.

[Raghu17s]

I am following #144 and using Chaquopy 6.3.0
I have placed the graph1.txt file in chaquopy-console-master\app\src\main\python.
My code is
from os.path import dirname, join
f = open(join(dirname('src/main/python'),'graph1.txt'))

It throws a following error in the device after running
Exception in thread Thread-1:
Traceback (most recent call last):
  File "stdlib/threading.py", line 916, in _bootstrap_inner
  File "stdlib/threading.py", line 864, in run
  File "/data/user/0/com.chaquo.python.console/files/chaquopy/AssetFinder/app/chaquopy/utils/console.py", line 14, in
  File "class.pxi", line 695, in java.chaquopy.JavaMethod.get.lambda2
  File "class.pxi", line 715, in java.chaquopy.JavaMethod.call
  File "class.pxi", line 805, in java.chaquopy.JavaMethod.call_nonvirtual_method
  File "env.pxi", line 242, in java.chaquopy.CQPEnv.CallNonvirtualVoidMethodA
  File "env.pxi", line 484, in java.chaquopy.CQPEnv.check_exception
com.chaquo.python.PyException: FileNotFoundError: [Errno 2] No such file or directory: 'src/main/graph1.txt'
at .main.main(main.py:13)
at .chaquopy_java.call(chaquopy_java.pyx:283)
at .chaquopy_java.Java_com_chaquo_python_PyObject_callAttrThrows(chaquopy_java.pyx:255)
at com.chaquo.python.PyObject.callAttrThrows(Native Method)
at com.chaquo.python.PyObject.callAttr(PyObject.java:207)
at com.chaquo.python.console.MainActivity$Task.run(MainActivity.java:18)
at com.chaquo.python.utils.ConsoleActivity$Task$1.run(ConsoleActivity.java:352)

[mhsmith]

You should be using __file__. Please read #144 more carefully.

[Raghu17s]

I have used install "scikit-learn==0.21.2" in pip

I am getting following error.

Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory: 'G:\PhD UM 2017-2019\Programs\Objective 2\Python\chaquopy-console-master\chaquopy-console-master\app\build\generated\python\requirements\debug\armeabi-v7a\sklearn\datasets\tests\data\openml\1119\api-v1-json-data-list-data_name-adult-census-limit-2-data_version-1.json.gz'

Chaquopy: Exit status 1

Task :app:generateDebugPythonRequirements FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:generateDebugPythonRequirements'.

Process 'command 'py'' finished with non-zero exit value 1. For full details, open the 'Build' window and switch to text mode with the 'Toggle view' button on the left.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 1m 18s
4 actionable tasks: 1 executed, 3 up-to-date

[mhsmith]

You've encountered the Windows 260-character filename limit (pypa/pip#6279).

Try moving your project from G:\PhD UM 2017-2019\Programs\Objective 2\Python\chaquopy-console-master\chaquopy-console-master to somewhere with a shorter path. Even just removing the redundant chaquopy-console-master might be good enough.

[mhsmith]

Please create separate GitHub issues for separate problems in future.

[Simba167657]

I have one project including both Python, Android files that have same functions.
I want to compare the results by running the app using Chaquopy with each Python and Android.

[mhsmith]

If you have a question or problem, please create a separate issue and explain what it is.

[AbsolutelySaurabh]

            pip {
                install "numpy"
                install "imutils"
                install "opencv-python"
                install "pickle-mixin"
                install "scikit-learn==0.22.1"
            }

For chaquopy version 8.0.0 this is the latest version of scikit-learn supported.

[mhsmith]

0.22.1 is the scikit-learn version for the current version of Chaquopy (7.x or newer). For Chaquopy 6.x and older, the version was 0.21.2.

[dasprasky]

I am trying to use Chaquopy in multiple android projects but I always get the following error:

Build file 'C:\Users\prase\AndroidStudioProjects\TWSDemo\app\build.gradle' line: 4

A problem occurred evaluating project ':app'.
> No signature of method: build_19w8as9b2aebodjaw1i39scyz.android() is applicable for argument types: (build_19w8as9b2aebodjaw1i39scyz$_run_closure1) values: [build_19w8as9b2aebodjaw1i39scyz$_run_closure1@5f245830]

I followed the documentation till the ABI selection part and tried to build the project. What am I doing wrong?

[mhsmith]

Please create a new issue and include your app\build.gradle file.