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+## build and install openssl
+because python3.8 need openssl 1.1.1 
+```bash
+wget https://www.openssl.org/source/openssl-1.1.1u.tar.gz
+tar -zxvf openssl-1.1.1u.tar.gz
+cd openssl-1.1.1u
+./config
+make -j
+sudo make install 
+# find libssl path
+sudo find / -name "libssl.so.1.1"
+
+sudo echo "libssl path" > /etc/id.so.conf
+sudo ldconfig
+openssl 
+
+
+```
+
+## build and install python
+```bash
+sudo apt update
+sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev libsqlite3-dev wget libbz2-dev
+wget https://www.python.org/ftp/python/3.8.9/Python-3.8.9.tgz
+tar -xf Python-3.8.9.tgz
+cd Python-3.8.9
+./configure --enable-optimizations
+make -j
+sudo make install
+```