利用python求循环小数（UVa202）_python 循环节长度

输出a/b的循环小数表示以及循环节的长度。例如aa =5,bb =43 ,小数表示为0.(116279069767441860465)，循环节长度为21。

a, b = (int(x) for x in input().split(' '))
l = []
mod = a % b
i = 300
while i > 0:
    xs = (mod * 10) // b
    mod = (mod * 10) % b
    l.append(xs)
    i -= 1
for i in range(1, len(l) + 1):        # i指循环节长度
    m = 1
    for j in range(i):
        if l[j] != l[j + i]:
            m = 0
            break
    if m == 1:                         #验算
        p = i
        if l[2] == l[2 + i]:
            break
print(p)
print('0.(', end='')
for i in range(p):
    print(l[i], end='')
print(')')

运行结果：