摘要： 1\if语句：if condition 是True,执行if clause语句，并跳过后面的elif或else语句；执行一次 2\while语句；只要while condition是True，就会执行while clause语句，执行完后回头再看while condition的判断值； 只要cond 阅读全文

摘要： 1\直接输出数值和字符串类型： 1 print(2) 2 print('hello world') 2\ 阅读全文

摘要： A\The differences between == and = operators: 1 the == operator(equal to) asks whether two values are the same as each other; 2 the = operator(assignm 阅读全文