[错误处理]UnicodeDecodeError: 'ascii' codec can't decode byte 0xe5 in position 0: ordinal not in range(128)

Stackoverflow 回答：
将byte类型转化：byte_string.decode('utf-8')

Jinja2 is using Unicode internally which means that you have to pass Unicode objects to the render function or
bytestrings that only consist of ASCII characters.

A normal string in Python 2.x is a bytestring. To make it unicode use:

byte_string = 'a Python string which contains non-ascii data like €äãü'
unicode_string = byte_string.decode('utf-8')