循环与判断判断循环

if condition:
  do
else:
  do
#感觉和c差不多，冒号和缩进不要忘记了

#再看一下多重条件的格式
if condition:
  do
elif condition:
  do
else:
  do

def count_login():   
  password = input('password:')    
  if password == '12345':        
    print('输入成功！')    
  else:        
    print('错误，再输入')        
    count_login()
count_login()

#for循环
for item in iterable:
  do
#item表示元素，iterable是集合，不懂，没关系，来个代码
for i in range(1,11):
  print(i)
#其结果为依次输出1到10，切记11是不输出的

#while循环
while condition:
  do
#来个大家c中一定会学的求1到100的和
i = 0
sum = 0
while i < 100:    
  i = i + 1    
  sum = sum + i
print(sum)