docs: def init_command_set(self, scrapyd_url):
          """
           Initialize command set by scrapyd_url,each element is a list such as ['command','supported http method type']
          """
  
          if scrapyd_url[-1:] != '/':
              scrapyd_url = scrapyd_url + '/'
          self['daemonstatus'] = [scrapyd_url + 'daemonstatus.json', http_utils.METHOD_GET]
          self['addversion'] = [scrapyd_url + 'addversion.json', http_utils.METHOD_POST]
          self['schedule'] = [scrapyd_url + 'schedule.json', http_utils.METHOD_POST]
          self['cancel'] = [scrapyd_url + 'cancel.json', http_utils.METHOD_POST]
          self['listprojects'] = [scrapyd_url + 'listprojects.json', http_utils.METHOD_GET]
          self['listversions'] = [scrapyd_url + 'listversions.json', http_utils.METHOD_GET]
          self['listspiders'] = [scrapyd_url + 'listspiders.json', http_utils.METHOD_GET]
          self['listjobs'] = [scrapyd_url + 'listjobs.json', http_utils.METHOD_GET]
          self['delversion'] = [scrapyd_url + 'delversion.json', http_utils.METHOD_POST]
          self['delproject'] = [scrapyd_url + 'delproject.json', http_utils.METHOD_POST]
          self['logs'] = [scrapyd_url + 'logs/', http_utils.METHOD_GET]