Getting command not found: rasa on using rasa commands

Question

I have installed rasa using:

pip3 install rasa

When I try to use rasa commands like:

rasa init

I get zsh errors:

command not found: rasa error

I am on Mac OS Catalina, using:
Python version 2.7.16
Python3 version 3.7.6
pip version 19.2.3

My path variable looks like this:

/Library/Frameworks/Python.framework/Versions/3.7/bin
:/usr/local/bin
:/usr/bin
:/bin
:/usr/sbin
:/sbin 

Answer 1

RASA is currently incompatible with python 3.9+

I'm having python 3.10, and have to switch to python 3.8 for working with Rasa.

To save yourself time:

1. Install python 3.8

2. Create and activate virtual environment:

py -3.8 -m pip install virtualenv 
py -3.8 -m virtualenv venv
venv\Scripts\activate

3. Upgrade pip

py -3.8 -m pip install -U pip

4. Install Rasa

pip install rasa

5. Check installation

rasa -h

You should see something like:

usage: rasa [-h] [--version] {init,run,shell,train,interactive,telemetry,test,visualize,data,export,x,evaluate} ...

Rasa command line interface. Rasa allows you to build your own conversational assistants 🤖. The 'rasa' command allows
you to easily run most common commands like creating a new bot, training or evaluating models.
...

Answer 2

I also got the similar error in ubuntu, you can try these set of command:

pip install -U pip
pip install rasa

The first command will update the python package manager and the second will install rasa. If pip install rasa is not working, then you can try pip3 install rasa