Error in gym setup command: ‘extras_require’ must be a dictionary whose values are strings or lists of strings containing valid project/version requirement specifiers.

The error message “error in gym setup command: ‘extras_require’ must be a dictionary whose values are strings or lists of strings containing valid project/version requirement specifiers” indicates that there is an issue with the definition of the ‘extras_require’ attribute in the gym setup command.

In Python, ‘extras_require’ is a keyword argument used in the setup() function from the setuptools library to define additional dependencies needed for specific features of the package. It should be assigned a dictionary where the keys are the names of the extra features and the values are either strings or lists of strings representing the required project/version specifier.

Here is an example of how the ‘extras_require’ attribute should be defined correctly:

    
      from setuptools import setup

      setup(
          name='your_package',
          # other attributes...
          extras_require={
              'feature1': 'dependency1',
              'feature2': [
                  'dependency2>=1.0',
                  'dependency3<2.0'
              ]
          }
      )
    
  

In this example, the 'feature1' extra requires only 'dependency1', which can be any version. The 'feature2' extra, on the other hand, requires 'dependency2' version 1.0 or later, but less than 2.0, and 'dependency3' version less than 2.0.

Make sure that in your setup command, 'extras_require' is assigned a dictionary with proper key-value pairs. Check for any syntax errors or incorrect specification of project/version requirements.