python入门2，条件，循环，断言

name = input('Please input your name: ')
if name == 'lili':
print('ok')
elif name == 'haha':
print('no')
else:
print('fail')
"""
比较运算符
x == y
x < y
x > y
x >= y
x <= y
x != y
x is y                  x和y是同一个对象
x is not y
x in y
x not in y
"""
#python中允许0<age<10

while True:
print('*')

for x in range(0, 10):
print(x)  #0-9
#字典遍历方式
d = {'a':'d', 'b':'e'}
for key in d:
for key in d.keys():
for k,v in d.items():
#enumerate()
a = [1,2,3,4,5,6]
for index, value in enumerate(a):
print(index,value)
#for..else
for i in range(10, 6, -1):
break;
else:
print('1')

[x*x for x in range(10)]
[(x,y) for x in range(3) for y in range(3)]

assert condition