ninehills

# http://snipperize.todayclose.com/snippet/py/64-%E5%92%8C-10%E8%BF%9B%E5%88%B6--93237/


def encode_b64(n):
    table = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_'
    result = []
    temp = n
    if 0 == temp:
    ¦   result.append('0')
    else:

mywaiting

"""

http://saepy.sinaapp.com/topic/24/Tornado%E4%B8%8A%E4%BC%A0%E6%96%87%E4%BB%B6%E7%A4%BA%E4%BE%8B

在bcore的开发过程中，涉及到上传文件有两个地方，一个是相册，一个是文章图文混排。这里作为一个备忘。罗列一些关键点：

文件上传的内容体在tornado.web.RequestHandler.request.files属性中，并且是以数组形式存放的。
使用临时文件存储时，在write完成后要记着把seek重置到文件头。要不然文件无法被读取。
再使用Image模块的thumbnail方法进行缩放时,resample=1作为重载渲染参数能够有效的使图片平滑，消除锯齿。

mywaiting

class ProtocolBufferMixin(object):
    """Protocol Buffer support for RequestHandler objects."""

    MIMETYPE = 'application/x-protobuf'

    def read_protobuf(self, message_type, data):
        """Attempts to parse a protocol buffer message from the given data."""
        # Create the message object and attempt to parse the data into it.
        try:
            message = message_type()

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!