[CI] Add comments for ci/install_python_for_osx.sh

ci/install_python_for_osx.sh

@@ -2,15 +2,20 @@
 
 set -ev
 
-curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash
+brew update && brew upgrade pyenv
 
-# Upgrade pyenv
-cd ~/.pyenv/plugins/python-build/../.. && git pull && cd -
+# print openssl path
+brew --prefix openssl
 
+# Install specific version of Python via pyenv
 LDFLAGS="-L$(brew --prefix openssl)/lib" \
+CPPFLAGS="-I$(brew --prefix openssl)/include" \
 CFLAGS="-I$(brew --prefix openssl)/include" \
-CPPFLAGS="-I$(brew --prefix zlib)/include" \
-~/.pyenv/bin/pyenv install -v $PYTHON_VERSION
+pyenv install -v $PYTHON_VERSION
 
-~/.pyenv/versions/$PYTHON_VERSION/bin/python3 --version
+# Activate the specific Python version
 ~/.pyenv/versions/$PYTHON_VERSION/bin/python3 -m venv ~/venv
+
+# Check the specifically installed Python version
+python --version
+