Python's method of getting intermediate strings based on beginning and end strings

This example shows how python gets intermediate strings based on beginning and end strings. Share with you for your reference. Specific analysis is as follows:

Given a string, specify the beginning and end of the string, return the middle string, such as:
Content: < Div class = "a" > jb51.net < / div >
StartStr: < Div class = "a" >
EndStr: < / div >
Return result: jb51.net

def GetMiddleStr(content,startStr,endStr):
  startIndex = content.index(startStr)
  if startIndex>=0:
    startIndex += len(startStr)
  endIndex = content.index(endStr)
  return content[startIndex:endIndex]
if __name__=='__main__':
  print(GetMiddleStr('<div class="a">jb51.net</div>','<div class="a">','</div>'))

I hope this article has helped you with your Python programming.