def get_python_version()
      python_path = ::File.join(@name, 'bin', 'python')
      tmp = @runner.run_command("#{python_path} --version")
      if ( tmp.stderr =~ /^[Pp]ython (\d+\S+)/ )
        @python_version = $1
      elsif ( tmp.stdout =~ /^[Pp]ython (\d+\S+)/ )
        @python_version = $1
      else
        @python_version = ''
      end
    end
def get_python_version()
      python_path = ::File.join(@name, 'bin', 'python')
      tmp = @runner.run_command("#{python_path} --version")
      if ( tmp.stderr =~ /^[Pp]ython (\d+\S+)/ )
        @python_version = $1
      elsif ( tmp.stdout =~ /^[Pp]ython (\d+\S+)/ )
        @python_version = $1
      else
        @python_version = ''
      end
    end
Get the python version from the venv; set @python_version

 @api private
 @return [nil]