Use print to display strings to the console
两个基本概念:
Function 函数。例如print(“hello world”)
String 字符串。 例如helloworld
同理:
print(”hello”+”world ”). helloworld
print (“hello “+”world”). hello world
print (“hello “+” “+”world”). hello world
Console
Single or double quotes
Parenthesis
Use fuction len() to know the number of characters in a string
print(len(“hello world!”)). 12
空格和符号他都会算进去的
ps。python本身对大小写是敏感的