Fix Python version in Ubuntu18

installer/install_dependencies.sh

@@ -1,5 +1,28 @@
 #!/bin/bash
 
+#Upgrade Python if version is below than 3.8.10
+function upgradePython {
+  if $(dpkg --compare-versions $(python3 -c 'import sys; print(".".join(map(str, sys.version_info[:3])))') "lt" "3.8.10"); then
+    echo Intalling dependencies
+    sudo apt-get install -y make build-essential libssl-dev zlib1g-dev \
+    libbz2-dev libreadline-dev libsqlite3-dev llvm \
+    libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
+
+    if command -v pyenv 1; then
+      echo pyenv available
+    else
+      echo Downloading pyenv
+      curl https://pyenv.run | bash
+      export PATH="$HOME/.pyenv/bin:$PATH" && eval "$(pyenv init --path)" && echo -e 'export PATH="$HOME/.pyenv/bin:$PATH"\nif command -v pyenv 1>/dev/null 2>&1; then\n eval "$(pyenv init -)"\nfi' >> ~/.bashrc
+      echo Restarting shell
+    fi
+    echo Start Python upgrade
+    pyenv install 3.8.10
+    pyenv global 3.8.10
+    echo Finish Python upgrade
+  fi
+}
+
 # Install dependencies
 echo Installing dependencies
 sudo apt-get install -y make curl wget libltdl7 libseccomp2 libffi-dev gawk apt-transport-https ca-certificates curl gnupg gnupg-agent lsb-release software-properties-common sshpass pv
@@ -16,8 +39,9 @@ echo \
 echo Updating local repositories
 sudo apt-get update
 
-# Install python dependencies
+# Install pydthon dependencies
 echo Installing Python dependencies
+upgradePython
 sudo apt-get install -y python3-distutils
 sudo apt-get install -y python3-pip
 python3 -m pip install -U pip setuptools
@@ -40,3 +64,4 @@ fi
 
 # Ensure /usr/local/bin is in path
 export PATH=$PATH:/usr/local/bin
+exec $SHELL