def __init__(self, url_map):
     BaseConverter.__init__(self, url_map)
     self.regex = r'(?i)(?:WQL)'

 def __init__(self, map):
     BaseConverter.__init__(self, map)
     self.regex = '(?:%s)' % '|'.join([re.escape(x) for x in NEWS_URLS])

 def to_url(self, value):
     """Convert datetime to string."""
     return BaseConverter.to_url(self, str(value))

 def __init__(self, url_map):
     BaseConverter.__init__(self, url_map)
     self.regex = '(?:%s)' % '|'.join([re.escape(x) for x in items])

 def __init__(self, map):
     BaseConverter.__init__(self, map)
     self.regex = '\w+(?:-\w+)*'

 def __init__(self, map):
     BaseConverter.__init__(self, map)
     self.fixed_digits = 64

    def __init__(self, url_map, ext):
        BaseConverter.__init__(self, url_map)

        self.regex = '[^/].*?(?:{})'.format(ext)

 def to_url(self, values):
     return ",".join([BaseConverter.to_url(value) for value in values])

 def to_url(self, values):
     if len(values) > 2:  # Strip out everything extra
         values = values[:2]
     return ':'.join(BaseConverter.to_url(value)
                     for value in values)

 def to_url(self, values):
     """Return string."""
     return '+'.join(BaseConverter.to_url(value)
                     for value in values)

 def __init__(self, map, *args):
     BaseConverter.__init__(self,map)
     self.map = map
     self.regex = args[0]

 def to_url(self, values):
     return "[{0}]".format(
         ','.join(BaseConverter.to_url(value) for value in values) #pylint: disable=no-value-for-parameter
     ) 

 def __init__(self, mapping, *items):
     BaseConverter.__init__(self, mapping)
     # Start by enforcing that x is an integer then convert it to string
     self.regex = '(?:%s)' % '|'.join([str(int(x)) for x in items])

 def to_url(self, values):
     """
     被url_for()调用，来转换参数成为符合URL的形式
     """
     return '+'.join(BaseConverter.to_url(value)
                     for value in values)

 def to_url(self, value):
     return BaseConverter.to_url(value)

 def to_url(self, value):
     self.set_item(value)
     return BaseConverter.to_url(self, value.name)

 def to_url(self, values):
     print(1111111111, values)
     return self.separator.join(BaseConverter.to_url(value)
                                for value in values)

 def __init__(self, map, *items):
     BaseConverter.__init__(self, map)
     self.regex = items[0]

 def __init__(self, map, *items):
     BaseConverter.__init__(self, map)
     self.items = items

 def to_url(self, values):
     return ','.join(BaseConverter.to_url(value) for value in values)