Python基础1 介绍、基本语法、流程控制

1、for循环 

for i in range(5):
    print(i)
else:
    print("over")

2、while循环

i = 0
while i<5:
    print(i)
    i+=1
else:
    print("over")

3、三元运算

a,b,c = 1,3,5
d = a if a>b else c
print(d)

 4、字符串格式化输出

>>> name="zhangsan"
>>> age=19
>>> info="Name:%s,Age:%d"%(name,age)
>>> info
'Name:zhangsan,Age:19'
>>> info2="Name:{name},Age:{age}".format(name=name,age=age)
>>> info2
'Name:zhangsan,Age:19'
>>> info3="Name:{0},Age:{1}".format(name,age)
>>> info3
'Name:zhangsan,Age:19'