Python 删除连续出现的指定字符的实例

def romoveRepetedGap(str):
 resultStr = str
 tempStr = ''
 strList = list(resultStr)
 for i in range(len(strList)):
  if strList[i] != '~':
   tempStr += strList[i]
  elif strList[i] == '~' and i+1 ==len(strList):
   tempStr += strList[i]
  elif strList[i] == '~' and strList[i+1] !='~':
   tempStr += strList[i]
  else: continue
 return tempStr