adapting jenkinsfile

_installpyenv.sh

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+# !/bin/bash
+
+# Step 1. Install pyenv
+
+git clone https://github.com/pyenv/pyenv.git ~/.pyenv
+echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
+echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
+echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.bashrc
+source ~/.bashrc
+
+# Step 2. Install missing headers for all the Python modules to be built and make sure gcc is installed
+
+#sudo zypper install -y readline-devel sqlite3-devel libbz2-devel zlib-devel libopenssl-devel libffi-devel gcc
+
+# Step 3. Install the desired Python version
+
+#pyenv install 3.7.4
+
+# Step 4. Install virtualenv
+
+#sudo zypper install -y python3-virtualenv
+pip3 install --user virtualenv
+# Step 5. Create a virtual environment for the installed Python and activate it
+
+#mkdir ~/pythons
+#cd ~/pythons
+virtualenv -p ~/.pyenv/versions/3.7.4/bin/python3.7 python3.7.4
+source ./python3.7.4/bin/activate

updatepython.sh

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+# !/bin/bash
+
+# Step 1. Install pyenv
+
+sudo zipper refresh
+sudo zipper update -y
+sudo zypper install -y readline-devel sqlite3-devel libbz2-devel zlib-devel libopenssl-devel libffi-devel gcc make
+cd /tmp
+wget https://www.python.org/ftp/python/3.8.7/Python-3.8.7.tgz
+tar -xvf Python-3.8.7.tgz
+cd Python-3.8.7/
+
+./configure
+make
+make install
+
+echo ‘export PATH=”$PATH/root/Python-3.8.7/”’>> ~/.bashrc 
+source ~/.bashrc
+
+python3 --version
+# Step 3. Install the desired Python version
+
+#pyenv install 3.7.4
+
+# Step 4. Install virtualenv
+
+#sudo zypper install -y python3-virtualenv