Python ufunc bitwise_xor 的类型错误
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TypeError with ufunc bitwise_xor
提问by doublefelix
In my program which traces out the path of a particle, I get the following error:
在我追踪粒子路径的程序中，我收到以下错误：
Traceback (most recent call last):
File "C:\Users\Felix\Google Drive\Research\particles.py", line 154, in <module>
bfield += b_X(r_p(r,pos[2]))*(r_p(r,pos[2])/r)
*((r-r_p(r,pos[2]))**2+pos[2]**2)^(-1/2)*np.array
([(1-r_p(r,pos[2])/r)*pos[0],(1-r_p(r,pos[2])/r)*pos[1],pos[2]])
TypeError: ufunc 'bitwise_xor' not supported for the input types,
and the inputs could not be safely coerced to any supported types
according to the casting rule ''safe''
I can't seem to find what's going on. I don't have any instances of xor (although I suppose it might be encoded in an if/else statement).
我似乎无法找到发生了什么。我没有任何 xor 实例（尽管我认为它可能被编码在 if/else 语句中）。
采纳答案by JoshAdel
In the offending line you are using a ^when you want a **to raise a value to a power. Python interprets this as an xor:
在违规行中，^当您希望 a**将值提高到幂时，您正在使用 a 。Python 将其解释为 xor：
bfield += b_X(r_p(r,pos[2]))*(r_p(r,pos[2])/r)*((r-r_p(r,pos[2]))**2+
pos[2]**2)^(-1/2)*np.array([(1-r_p(r,pos[2])/r)*pos[0],
(1-r_p(r,pos[2])/r)*pos[1],pos[2]])
See:
看：
http://docs.python.org/2/reference/expressions.html#binary-bitwise-operations
http://docs.python.org/2/reference/expressions.html#binary-bitwise-operations
