变量:
print
(
"Hello world"
)
name =
"Piero"
name2 = name
print
(
"My name is"
,name)
name =
"Zhang"
print
(name,name2)
-------》
Hello world
My name is Piero
Zhang Piero
-----------------》
保留变量,不能做使变量
'and''as'.....
常量:大写
PIE =