AttributeError: ‘str‘ object has no attribute ‘append‘

可以使用insert代替append
a=str(age,sex,job)
a[2].insert(1,'age')

[Python]"no encoding declared

可添加编码
#coding=utf-8

或者以下声明
# -*- coding:utf-8 -*-

TypeError: not all arguments converted during string formatting

#原因是参数数量不匹配
print( """Personal info:
    name:  %s
    age :  %d
    sex :  %s
    job :  %s
""" % (name,age,age,sex,job))
#解决办法
print( """Personal info: name: %s age : %d sex : %s job : %s """ % (name,age,age,sex,job))