擅长:python、mysql、java
<p>我试过了,这是有效的(我的输入格式是a/b+c/d):</p>
<pre><code>from fractions import*
print ("your operation:")
op = input()
#print (op)
elements = op.split()
for el in elements:
if ('/' in el):
fraction = el.split('/')
numerator = fraction[0]
denominator = fraction[1]
a = Fraction(int(numerator),int(denominator))
print (numerator)
print (denominator)
print (a)
</code></pre>