ModuleNotFound: No module named 'math'

[Padam Gupta]

Hello Everyone, I was just wondering how can I convert my flask app into a web view android app. I got py4a and give it a try.

After successful installation, I run python-for-android logcat and got this

[WARNING]: $ANDROIDNDKVER is deprecated and no longer necessary, the value you set is ignored

[INFO]:    Found Android API target in $ANDROIDAPI: 28

[ERROR]:   Build failed: Asked to build for armeabi architecture with API 28, but API 21 or greater does not support armeabi.

[INFO]:    Instructions: You probably want to build with --arch=armeabi-v7a instead

I didn't understand what does it mean but I skip this error and use this

p4a apk --private /home/deviantpadam/recommender_system/ --package=deviant.myapp --name "Scholarly Articles Andoid" --version 0.1 --bootstrap=webview --requirements=python==3.7.5,Flask==1.1.1,gensim==3.8.0,h5py==2.10.0,Jinja2==2.11.1,numpy==1.18.1,pandas==1.0.3,SQLAlchemy==1.3.17,pickle5==0.0.10,cloudpickle==1.4.1,scikit-learn==0.22.1,scipy==1.4.1 ,category_encoders==2.2.2,lightgbm==2.3.1 --port=5000 --orientation sensor --debug

Now here is the Log,

[DEBUG]:   

[DEBUG]:    Python build finished successfully!

[DEBUG]:    The necessary bits to build these optional modules were not found:

[DEBUG]:    _dbm                  _gdbm                 _tkinter

[DEBUG]:    nis                   spwd

[DEBUG]:    To find the necessary bits, look in setup.py in detect_modules() for the module's name.

[DEBUG]:   

[DEBUG]:   

[DEBUG]:    The following modules found by detect_modules() in setup.py, have been

[DEBUG]:    built by the Makefile instead, as configured by the Setup files:

[DEBUG]:    _abc                  atexit                pwd

[DEBUG]:    time

[DEBUG]:   

[DEBUG]:   

[DEBUG]:    Failed to build these modules:

[DEBUG]:    _crypt                _curses               _curses_panel

[DEBUG]:    _uuid                 grp                   readline

[DEBUG]:   

[DEBUG]:    running build_scripts

[DEBUG]:    creating build/scripts-3.8

[DEBUG]:    copying and adjusting /home/deviantpadam/.local/share/python-for-android/build/other_builds/python3-libbz2-liblzma/armeabi-v7a__ndk_target_21/python3/Tools/scripts/pydoc3 -> build/scripts-3.8

[DEBUG]:    copying and adjusting /home/deviantpadam/.local/share/python-for-android/build/other_builds/python3-libbz2-liblzma/armeabi-v7a__ndk_target_21/python3/Tools/scripts/idle3 -> build/scripts-3.8

[DEBUG]:    copying and adjusting /home/deviantpadam/.local/share/python-for-android/build/other_builds/python3-libbz2-liblzma/armeabi-v7a__ndk_target_21/python3/Tools/scripts/2to3 -> build/scripts-3.8

[DEBUG]:    changing mode of build/scripts-3.8/pydoc3 from 664 to 775

[DEBUG]:    changing mode of build/scripts-3.8/idle3 from 664 to 775

[DEBUG]:    changing mode of build/scripts-3.8/2to3 from 664 to 775

[DEBUG]:    renaming build/scripts-3.8/pydoc3 to build/scripts-3.8/pydoc3.8

[DEBUG]:    renaming build/scripts-3.8/idle3 to build/scripts-3.8/idle3.8

[DEBUG]:    renaming build/scripts-3.8/2to3 to build/scripts-3.8/2to3-3.8

[INFO]:    <- directory context /home/deviantpadam

[INFO]:    Building genericndkbuild for armeabi-v7a

[INFO]:    -> directory context /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni

[DEBUG]:   -> running ndk-build V=1

[DEBUG]:    Android NDK: Found platform level in /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/project.properties. Setting APP_PLATFORM to android-28.

[DEBUG]:    Android NDK: WARNING:/home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/Android.mk:main: non-system libraries in linker flags: -lpython3.8m

[DEBUG]:    Android NDK:     This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES

[DEBUG]:    Android NDK:     or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the

[DEBUG]:    Android NDK:     current module

[DEBUG]:    /home/deviantpadam/Documents/android-ndk-r19c/build/core/build-binary.mk:672: Android NDK: Module main depends on undefined modules: python_shared

[DEBUG]:    rm -f /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/libs/armeabi-v7a/*

[DEBUG]:    rm -f /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/libs/armeabi-v7a/gdbserver

[DEBUG]:    rm -f /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/libs/armeabi-v7a/gdb.setup

[DEBUG]:    [armeabi-v7a] Compile thumb  : main <= start.c

[DEBUG]:    rm -f /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/start.o

[DEBUG]:    /usr/bin/ccache /home/deviantpadam/Documents/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -MMD -MP -MF /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/start.o.d -target armv7-none-linux-androideabi28 -fdata-sections -ffunction-sections -fstack-protector-strong -funwind-tables -no-canonical-prefixes  --sysroot /home/deviantpadam/Documents/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/sysroot -g -Wno-invalid-command-line-argument -Wno-unused-command-line-argument  -fno-addrsig -fpic -mfpu=vfpv3-d16  -march=armv7-a -mthumb -Oz -DNDEBUG  -mfpu=neon -I/home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src   -DANDROID -I/home/deviantpadam/.local/share/python-for-android/build/other_builds/python3-libbz2-liblzma/armeabi-v7a__ndk_target_21/python3/Include -Wa,--noexecstack -Wformat -Werror=format-security  -c  /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/start.c -o /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/start.o

[DEBUG]:    [armeabi-v7a] Compile thumb  : main <= pyjniusjni.c

[DEBUG]:    rm -f /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/pyjniusjni.o

[DEBUG]:    /usr/bin/ccache /home/deviantpadam/Documents/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -MMD -MP -MF /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/pyjniusjni.o.d -target armv7-none-linux-androideabi28 -fdata-sections -ffunction-sections -fstack-protector-strong -funwind-tables -no-canonical-prefixes  --sysroot /home/deviantpadam/Documents/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/sysroot -g -Wno-invalid-command-line-argument -Wno-unused-command-line-argument  -fno-addrsig -fpic -mfpu=vfpv3-d16  -march=armv7-a -mthumb -Oz -DNDEBUG  -mfpu=neon -I/home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src   -DANDROID -I/home/deviantpadam/.local/share/python-for-android/build/other_builds/python3-libbz2-liblzma/armeabi-v7a__ndk_target_21/python3/Include -Wa,--noexecstack -Wformat -Werror=format-security  -c  /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/pyjniusjni.c -o /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/pyjniusjni.o

[DEBUG]:    /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/pyjniusjni.c:15:9: warning: 'LOGI' macro redefined [-Wmacro-redefined]

[DEBUG]:    #define LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)

[DEBUG]:            ^

[DEBUG]:    /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/pyjniusjni.c:5:9: note: previous definition is here

[DEBUG]:    #define LOGI(...) do {} while (0)

[DEBUG]:            ^

[DEBUG]:    /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/pyjniusjni.c:16:9: warning: 'LOGE' macro redefined [-Wmacro-redefined]

[DEBUG]:    #define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)

[DEBUG]:            ^

[DEBUG]:    /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/jni/application/src/pyjniusjni.c:6:9: note: previous definition is here

[DEBUG]:    #define LOGE(...) do {} while (0)

[DEBUG]:            ^

[DEBUG]:    2 warnings generated.

[DEBUG]:    [armeabi-v7a] SharedLibrary  : libmain.so

[DEBUG]:    /home/deviantpadam/Documents/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -Wl,-soname,libmain.so -shared /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/start.o /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/objs/main/pyjniusjni.o -lgcc -Wl,--exclude-libs,libgcc.a -latomic -Wl,--exclude-libs,libatomic.a -target armv7-none-linux-androideabi28 -no-canonical-prefixes   -L/home/deviantpadam/.local/share/python-for-android/build/other_builds/python3-libbz2-liblzma/armeabi-v7a__ndk_target_21/python3/android-build -Wl,--build-id -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--warn-shared-textrel -Wl,--fatal-warnings   -llog -lpython3.8m -lc -lm -o /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/libmain.so

[DEBUG]:    [armeabi-v7a] Install        : libmain.so => libs/armeabi-v7a/libmain.so

[DEBUG]:    install -p /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/obj/local/armeabi-v7a/libmain.so /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/libs/armeabi-v7a/libmain.so

[DEBUG]:    /home/deviantpadam/Documents/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/bin/arm-linux-androideabi-strip --strip-unneeded  /home/deviantpadam/.local/share/python-for-android/build/bootstrap_builds/webview/libs/armeabi-v7a/libmain.so

[INFO]:    <- directory context /home/deviantpadam

[INFO]:    Building pytz for armeabi-v7a

[INFO]:    pytz apparently isn't already in site-packages

[INFO]:    Installing pytz into site-packages

[INFO]:    -> directory context /home/deviantpadam/.local/share/python-for-android/build/other_builds/pytz/armeabi-v7a__ndk_target_21/pytz

[DEBUG]:   -> running python3 setup.py install -O2 --root=/home/deviantpadam/.local/share/python-for-android/build/python-installs/unnamed_dist_1 --install-lib=.

[DEBUG]:    Traceback (most recent call last):

[DEBUG]:      File "setup.py", line 5, in <module>

[DEBUG]:        import pytz

[DEBUG]:      File "/home/deviantpadam/.local/share/python-for-android/build/other_builds/pytz/armeabi-v7a__ndk_target_21/pytz/pytz/__init__.py", line 12, in <module>

[DEBUG]:        import datetime

[DEBUG]:      File "/home/deviantpadam/.local/share/python-for-android/build/other_builds/hostpython3/desktop/hostpython3/Lib/datetime.py", line 8, in <module>

[DEBUG]:        import math as _math

[DEBUG]:    ModuleNotFoundError: No module named 'math'

Exception in thread background thread for pid 24380:

Traceback (most recent call last):

  File "/home/deviantpadam/anaconda3/lib/python3.7/threading.py", line 926, in _bootstrap_inner

    self.run()

  File "/home/deviantpadam/anaconda3/lib/python3.7/threading.py", line 870, in run

    self._target(*self._args, **self._kwargs)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 1662, in wrap

    fn(*args, **kwargs)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 2606, in background_thread

    handle_exit_code(exit_code)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 2304, in fn

    return self.command.handle_command_exit_code(exit_code)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 877, in handle_command_exit_code

    raise exc

sh.ErrorReturnCode_1: 

  RAN: /home/deviantpadam/.local/share/python-for-android/build/other_builds/hostpython3/desktop/hostpython3/native-build/python3 setup.py install -O2 --root=/home/deviantpadam/.local/share/python-for-android/build/python-installs/unnamed_dist_1 --install-lib=.

  STDOUT:

Traceback (most recent call last):

  File "setup.py", line 5, in <module>

    import pytz

  File "/home/deviantpadam/.local/share/python-for-android/build/other_builds/pytz/armeabi-v7a__ndk_target_21/pytz/pytz/__init__.py", line 12, in <module>

    import datetime

  File "/home/deviantpadam/.local/share/python-for-android/build/other_builds/hostpython3/desktop/hostpython3/Lib/datetime.py", line 8, in <module>

    import math as _math

ModuleNotFoundError: No module named 'math'

  STDERR:

Traceback (most recent call last):

  File "/home/deviantpadam/anaconda3/bin/p4a", line 8, in <module>

    sys.exit(main())

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/entrypoints.py", line 18, in main

    ToolchainCL()

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/toolchain.py", line 709, in __init__

    getattr(self, command)(args)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/toolchain.py", line 154, in wrapper_func

    build_dist_from_args(ctx, dist, args)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/toolchain.py", line 216, in build_dist_from_args

    args, "ignore_setup_py", False

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/build.py", line 577, in build_recipes

    recipe.build_arch(arch)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/recipe.py", line 946, in build_arch

    self.install_python_package(arch)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/recipe.py", line 965, in install_python_package

    _env=hpenv, *self.setup_extra_args)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/pythonforandroid/logger.py", line 167, in shprint

    for line in output:

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 925, in next

    self.wait()

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 849, in wait

    self.handle_command_exit_code(exit_code)

  File "/home/deviantpadam/anaconda3/lib/python3.7/site-packages/sh.py", line 877, in handle_command_exit_code

    raise exc

sh.ErrorReturnCode_1: 

  RAN: /home/deviantpadam/.local/share/python-for-android/build/other_builds/hostpython3/desktop/hostpython3/native-build/python3 setup.py install -O2 --root=/home/deviantpadam/.local/share/python-for-android/build/python-installs/unnamed_dist_1 --install-lib=.

  STDOUT:

Traceback (most recent call last):

  File "setup.py", line 5, in <module>

    import pytz

  File "/home/deviantpadam/.local/share/python-for-android/build/other_builds/pytz/armeabi-v7a__ndk_target_21/pytz/pytz/__init__.py", line 12, in <module>

    import datetime

  File "/home/deviantpadam/.local/share/python-for-android/build/other_builds/hostpython3/desktop/hostpython3/Lib/datetime.py", line 8, in <module>

    import math as _math

ModuleNotFoundError: No module named 'math'

  STDERR:

Please help me to get rid of these errors.

[K leo]

Check out buildozer.  It's a wrapper around p4a for Android but has easier ways for setting.

[Robert Flatt]

Probably several issues, but   scikit-learn==0.22.1,scipy==1.4.1    is fatal, these are not available.

Not gonna work, sorry.

[Padam Gupta]

Thanks for response.

so should I use lower version of scikit and scipy? If yes, then which version?

[Padam Gupta]

Thanks for response.

Using buildozer can I make a web-view android app?

[Andrei Sima]

So should I use lower version of scipy and scikit-learn?

None will work. There is no recipe for these packages.

And scipy has pandas as a dependency and things get even more complicated.

Using buildozer can I make a web-view android app?

No. Buildozer is based on python4andoid that is making possible running python on android OS.

____________________

Andrei Sima

andre...@gmail.com

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[Padam Gupta]

Thanks for response.

So there is no way to convert my flask app into android app rather than writing code from scratch ?

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