<p>Python 3。以下代码表示:</p>
<pre><code>25: RuntimeWarning: invalid value encountered in power
L[i] = (((volume*(10**6))*4*(F**2))/(C*pi))**(1/3) #ft
</code></pre>
<p>在L[1,22]到L[1,30]和L[2,15]到L[2,30]时遇到错误</p>
<p>这是循环的一部分吗?我可以复制并粘贴volume=22和F=5,它得出的数字很好</p>
<pre><code>lo = 0.06521 # lbm/ft^3
volume = np.arange(0,31) # M ft^3
lift = volume*10**6*lo # lbm
lift = lift/2000 # ton
C = 0.6 # Cylindrical Coefficient
pi = np.pi
L = np.zeros((3,len(volume)))
for F in range(4,7):
i = F - 4
L[i] = (((volume*(10**6))*4*(F**2))/(C*pi))**(1/3) #ft
</code></pre>