# 条件判断语句

"""

if 条件(真假):

语句

elif 条件:

语句

elif 条件:

...

else:

语句

pass

"""

# score = 95

# if score < 60:

# print("不及格")

# elif 60 <=score < 80: # 60 <= score < 80

# print("良好")

# elif score < 90:

# print("优秀")

# else:

# print("杰出")

# if score > 90:

# print("杰出")

# elif score > 80:

# print("优秀")

# elif score > 60:

# print("良好")

# else:

# print("不及格")

# for 循环

fruits = ['苹果', '香蕉', '樱桃', '荔枝', '芒果']

# for 值 in list:

# for fruit in fruits:

# print(fruit)

# for index, fruit in enumerate(fruits):

# print(index, fruit)

# print(help(range))

# while 循环

"""

while 条件判断:

程序语句

pass

"""

# a = 0

# while a <= 100:

# print(a)

# a += 1

# print(help(range))

# for i in range(1, 100, 3):

# print(i)

# import time

# # 无限循环

# while True:

# print("CTA策略运行")

# time.sleep(5)

# break 和 continue:

## - continue语句被用来告诉Python跳过当前循环块中的剩余语句，然后继续进行下一轮循环。

## - break 语句可以跳出 for 和 while 的循环体,结束当前的循环.

# for letter in 'BTC/USDT': # 第一个实例 可迭代的对象

# # print(letter)

# if letter == 'U':

# break

# # continue

# print('当前字母为 :', letter)

#

# print("*"*20)

# for letter in 'BTC/USDT': # 第一个实例 可迭代的对象

# # print(letter)

# if letter == 'U':

# # break

# continue

# print('当前字母为 :', letter)

#

var = 10 # 第二个实例

while var > 0:

print('当期变量值为 :', var)

var = var - 1

if var == 5:

break

print("*" * 20)

var = 10 # 第二个实例

while var > 0:

var = var - 1

if var == 5: # 变量为 5 时跳过输出

continue

print('当前变量值 :', var)