TA-lib library not installing in pydroid 3?

Question

I tried all ways given in the discription in of TA-Lib. But not able to install it in my Android 10 mobile in Pydroid app.

1} pip install TA-Lib

It gives error. Talib library cannot found

Answer 1

TA-Lib is a library written in C. You're trying to install a python wrapper for it. It won't work without the native library.

I've prepared a C sources and instructions to build library on the phone. In a nutshell (tested with Nokia 6):

1. Install PyDroid 3 from Google Play.
2. Open it and install 2 packages via Pip (install repository plugin if needed): wget, cmake
3. Open PyDroid's terminal:

# let's make a working dir
mkdir talib
cd talib

# download the buildable ta-lib sources
wget https://github.com/trufanov-nok/ta-lib-rt/releases/download/0.6.0/libta-lib_0.6.0.PyDroid3.tar.gz

# unpack them
tar xf libta-lib_0.6.0.PyDroid3.tar.gz

# make a build dir
mkdir build
cd build

#build and install the library
cmake -DCMAKE_INSTALL_PREFIX=/data/user/0/ru.iiec.pydroid3/files/aarch64-linux-android/ ..
make
make install

4. Install via Pip packages cython and ta-lib. Or better In terminal type in

pip -v install cython
pip -v install ta-lib

I prefer the last variant of installation as it allows to track the process.
Note: It may take up to 5 min to compile wrapper and produce a lot of warnings which is ok.

5. Type in the test python code in PyDroid 3:

import talib
print(talib.__ta_version__)

output should be

b'0.6.0-dev (Nov 24 2020 20:15:43)`
[Program finished]