def trim(param):
if not isinstance(param, str):
raise TypeError:('Aha get a bad param')
first, end = 0, -1
try:
while param[first] is ' ':
first += 1
while param[end] is ' '
end -= 1
return param[first:end] if end != -1 else param[first:]
except IndexError:
return ''
用户9706266415
def trim(param): if not isinstance(param, str): raise TypeError:('Aha get a bad param') first, end = 0, -1 try: while param[first] is ' ': first += 1 while param[end] is ' ' end -= 1 return param[first:end] if end != -1 else param[first:] except IndexError: return ''