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玥儿

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玥

#1 Created at ... [Delete] [Delete and Lock User]

# 去掉首尾空格

def trim(s):
    if not isinstance(s,(str)):
       raise TypeError('bad operand type')
    if len(s) == 0:
       return s 
    while s[0] == ' ':
       s = s[1:]
       if s == ' ':
          return s
    while s[-1] == '':
       s = s[:-1]
    return s

玥

#2 Created at ... [Delete] [Delete and Lock User] 
    while s[-1] == ' ':

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