a=int(input("你的成绩是："))
if a>60:
  print("你合格了!")
else :
  print("你没及格!")

a = int(input("请输入一个整数"))
if a<0:
  print("0>")
elif a<10:#elif=else if
  print("<10")
elif a<60:
  print("a<60")
else :
  print("a>60")

list1 = ["apple","banana","pine","super banana"]
for i in list1:
  print(i,end="\t")
for i in range(10):
  print(i,end="\t")
print("\n------迭代同时显示下标------")
for i, value in enumerate(['A', 'B', 'C']):
  print(i, value)
print("\n------for-else------")
for i in range(0,10,3):
  print(i)
else:#执行完for就执行else
  print("你跳出了循环")

apple  banana  pine  super banana  
0  1  2  3  4  5  6  7  8  9  
------迭代同时显示下标------
0 A
1 B
2 C
------for--else------
0
3
6
9
你跳出了循环

n=3
while n>0:
  print("hello world",n)
  n=n-1
def while_else(count):
  while count>3:
    print("in while")
    count=count-1
  else:
    print("你退出了循环")
while_else(0)#不进入while
while_else(5)#进入while

hello world 3
hello world 2
hello world 1
---------------------------
你退出了循环
in while
in while
你退出了循环

while n!=1:
  n=int(input("你猜："))
  if n == 10:
    print("right")
    break
  elif n > 10 :
    print("too big")
  else :
    print("too small")
else :
  print("你退出了循环")

num=10
while(num>0):
  if num %2==0:
    print(num,end='')
    num = num - 1
  else:
    print(num,end='')
    print('-',end='')
    num=num-1
    continue
  print('+',end='')