poetry default to using python instead of python3

• I am on the latest Poetry version.

• I have searched the issues of this repo and believe that this is not a duplicate.

• [n/a ] If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: macOS big sur

• Poetry version: 1.1.2

• python3.8 installed with home-brew

Issue

when creating a new project with poetry it sets the python version as python 2.7 by default rather than using the latest available version.

It also ironically prints the warning:

Python 2.7 will no longer be supported in the next feature release of Poetry (1.2).
You should consider updating your Python version to a supported one.

Note that you will still be able to manage Python 2.7 projects by using the env command.
See https://python-poetry.org/docs/managing-environments/ for more information.

[ericriff]

The issue here is that the poetry executable has python in its shebang, which is annoying. I don’t remember exactly where it gets installed, but lets say it is /usr/bin/poetry, you can get this path with $ which poetry. If you edit the shebang in that executable and replace it with !/usr/bin/env python3 instead of !/usr/bin/env python it will work.

This is a hack and not a solution. I don’t know why this is not the default behavior.

[brechtm]

How about simply changing the following line in get-poetry.py

allowed_executables = ["python", "python3"]

to

allowed_executables = ["python3", "python"]

This first tries Python 3, which doesn’t spit out a big warning message. In fact, this is how it is done for Windows:

allowed_executables += ["py.exe -3", "py.exe -2"]