-> python[version='>=3.6,<3.7.0a0|>=3.9,<3.10.0a0|>=3.8,<3.9.0a0|>=3.7,<3.8.0a0']

This is a Python version specifier that indicates the package is compatible with any version of Python that falls into one of the following ranges:

- >=3.6 and <3.7.0a0
- >=3.9 and <3.10.0a0
- >=3.8 and <3.9.0a0
- >=3.7 and <3.8.0a0

In other words, the package can be installed on any version of Python that is at least 3.6, but less than 3.7.0a0, or at least 3.9, but less than 3.10.0a0, or at least 3.8, but less than 3.9.0a0, or at least 3.7, but less than 3.8.0a0.