How to get into python environment and run some python commands and return to normal terminal using shell script

Sorry about the title it may not be clear. Here is the complete explanation of my doubt. I am writing the below shell script and expecting the mentioned output. #!/bin/bash python3 print("Hello World") exit() echo "The execution is completed" The output what i am expecting is, it should enter the python3 interpreter and execute the print and exit() commands and after executing the exit() command as the interpreter exits if we do it manually and then execute the echo command.But it is not working that way, after executing python3 it is entering the python3 interpreter but not executing the print and exit(). >>> It is entering the python3 correctly and then stops there till i manually exit the python interpreter. What changes should i make in order to get my expected output. 1. The follow up question: Is it possible to get the output Hello world or any other output that is generated in the python interpreter to bash environment and use it in the bash script. 2.And method which you specify to run the python commands will that work for other tools as well?