擅长:python、mysql、java
<p>试试这个:</p>
<pre><code>def G(mass1, mass2, radius, force):
rightSide = (float(mass1)*mass2) / (radius**2) #I want this to be a float
print rightSide
if rightSide==0:
print("The operation resulted in a zero, error!")
else:
answer=force/rightSide
print(str(answer)+" is the gravitation constant (G)!")
</code></pre>