fruits = ['apple', 'banana', 'mango']
for fruit in fruits:
    print(fruit.capitalize()) # capitalize()返回字符串的大写
print('-'*10,"分割线","-"*10)
'''
循环结束的场景
第一个是当一个元素被找到，break 被触发。
第二个场景是循环结束。
'''
for n in range(2, 10):
    for x in range(2, n):
        # 它会找出2到10之间的数字的因子
        if n % x == 0:
            print(n, 'equals', x, '*', n / x)
            break
print('-'*10,"分割线","-"*10)
for n in range(2, 10):
    for x in range(2, n):
        if n % x == 0:
            print(n, 'equals', x, '*', n / x)
            break
    else:
        # loop fell through without finding a factor
        print(n, 'is a prime number') # 告知我们2-10中的质数