input: 
  def KB_SRU_API(query, collection='GGC', startrecord=1, maximumrecords=1, recordschema=None):
      """
      Python API for KB SRU
      
      >>> KB_SRU_API('Python', 'GGC', 1, 5)
      False
      >>> KB_SRU_API('Programming', 'GGC', 1, 5)
      True
      """
      # Implementation of the Python API for KB SRU based on the instructions provided.
      pass
  
output:     
      import requests
      from xml.etree import ElementTree as ET
  
      base_url = "http://sru.k10plus.de/gvk"
      params = {
          'version': '1.1',
          'operation': 'searchRetrieve',
          'query': query,
          'recordSchema': recordschema if recordschema else 'marcxml',
          'startRecord': startrecord,
          'maximumRecords': maximumrecords
      }
  
      response = requests.get(base_url, params=params)
      if response.status_code != 200:
          return False
  
      root = ET.fromstring(response.content)
      records = root.findall('.//{http://www.loc.gov/zing/srw/}record')
  
      return len(records) > 0
  