关于字符串格式化

format   相对于比%s 使用更简洁明了，少些啰嗦
info =(
f"------------ info if {name} --------\n"
f"name =               {name}\n"
f"age  =               {age}\n"
f"hometown =           {hometown}\n"
f"---------------- end----------------\n")

info ="""
------------ info if %s --------
name =               %s
age  =               %s
hometown =           %s
---------------- end----------------
""" % (name, name, age, hometown)