Python：正则re.sub实现简易的模板引擎

# -*- coding: utf-8 -*-
import re
class Template(object):
    pattern = r"\{(\w+)\}"
    def __init__(self, template):
        self.template = template
        self.re_pattern = re.compile(self.pattern)
    def compile(self, **kwargs):
        def foo(mo):
            return kwargs[mo.group(1)]
        return self.re_pattern.sub(foo, self.template)
if __name__ == '__main__':
    t = Template('/student/{uid}/{name}')
    data = {
        "uid": '1',
        "name": "Tom"
    }
    print(t.compile(**data))
    # /student/1/Tom