A popular python cli tool uses interactive mode of python interpreter 

using the "-i" option as below (notice the prompt becomes ">>>"  

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(base) C:\Users\Me>python -i

Python 3.8.5 (default, Sep  3 2020, 21:29:08) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32

Type "help", "copyright", "credits" or "license" for more information.

>>>

​

>>> msg="This is a string."

>>> globals()

{'__name__': '__main__', '__doc__': None, '__package__': None,

 '__loader__': <class '_frozen_importlib.BuiltinImporter'>, '__spec__': None,

 '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>,

 'msg': 'This is a string.'}

>>> #notice msg is displayed on last part of (show) globals()