newbie question: how to run gtts-cli on raspberry pi command line after succesfull "pip install gTTS"

[the-other-martin]

I've succesfully installed gTTS via:
pip install gTTS

In python command line I can now use:

from gtts import gTTS
tts = gTTS('hello')
tts.save('hello.mp3')

... but I'd like to use on raspberry command line like:
gtts-cli 'hello' --output hello.mp3
... it says:
-bash: gtts-cli: Kommando nicht gefunden. (command not found)

What do I need to change in my setup?
Thanks, Martin

[the-other-martin]

Is this the way?
python3 /home/pi/.local/bin/gtts-cli 'It seems to work now!' --output hello.mp3