循环

1. while

# while
index = 0
while index < 100:
    print(index)
    index += 1

2. for

# for
for i in range(100):
    print(i)

# 求n的阶乘
result = 0
index = 1
while index <= 5:
    current_result = 1
    m = 1
    while m <= index:
        current_result = current_result * m
        m += 1
    result += current_result
    index += 1
print("5的阶乘为：%d" % result)

3. break

# break
for i in range(10):
    print(i)
    if i == 3:
        print("结束循环")
        break

4. continue

# continue
for i in range(10):
    if i == 5:
        continue
    print(i)