9.Python：流程控制_while循环

"""
while 条件:
    代码1
    代码2
    代码3

"""
# a = 0
# while a < 10:
#     print(a)
#     a += 1

# 死循环:不会结束

# 循环应用

name = "SEPIA"
password = "123"

# ============1===============
# flg = 0
# while flg == 0:
#     inp_name = input("name:")
#     inp_password = input("password:")
#
#     if inp_name == name and inp_password == password:
#         print("OK")
#         flg = 1
#     else:
#         print("XX")
# ============2===============
# while True:
#     inp_name = input("name:")
#     inp_password = input("password:")
#
#     if inp_name == name and inp_password == password:
#         print("OK")
#         break
#     else:
#         print("XX")
#
#     print("try again")

# while嵌套

"""
while True:
    while True:
        while True:
            break
        break
    break


"""

# while + break:结束当前循环
count = 0
while count < 6:
    if count == 4:
        break
    print(count)
    count += 1

# while + continue:结束本次循环
count = 0
while count < 6:
    if count == 4:
        count += 1
        continue
    print(count)
    count += 1

# while + else
count = 0
while count < 3:
    inp_name = input("name:")
    inp_password = input("password:")

    if inp_name == name and inp_password == password:
        print("OK")
        flg = 3
    else:
        print("XX")
        count += 1
else:
    print("XXX")