[英]Python: Why isn't this working?/What does this error really mean?
I've currently got the following, but it won't iterate over i. 我目前有以下内容,但它不会遍历我。 I don't understand why it isn't working.
我不明白为什么它不起作用。 Bwavelength and throughput are lists.
B波长和吞吐量是列表。 It appears that i starts at 0, but won't increase to 1.
看来我从0开始,但不会增加到1。
ABconstant=[]
c=3e18
for i in range(0, ((len(Bwavelength))-1)):
ABconstant1=(((3e18/((Bwavelength[i])**2))*throughput[i]))
ABconstant.append(ABconstant1)
i+=1
a=Bwavelength[0]
b=Bwavelength[-1]
h=((b-a)/len(Bwavelength))
ABflux = numpy.trapz(Bwavelength, ABconstant, h)
return ABflux
The error I get is: 我得到的错误是:
Traceback (most recent call last):
File "Rewrite17.11.2014.py", line 196, in <module>
ABflux1 = ABconversion(Bwavelength, throughput)
File "Rewrite17.11.2014.py", line 186, in ABconversion
ABflux = numpy.trapz(Bwavelength, ABconstant, h)
File "C:\Python27\lib\site-packages\numpy\lib\function_base.py, line 3234, in trapz
ret = add.reduce(d * (y[slice1]+y[slice2]/2.0, axis)
ValueError: Operands could not be broadcast together with shapes (0,) (444,)
Bwavelength and throughput are of equal length. B波长和吞吐量相等。
I have no idea what that actually means, despite having looked it up. 尽管查了一下,但我不知道这实际上意味着什么。
Thanks in advance. 提前致谢。
The loop can be substituted by vector calculations: 该循环可以用矢量计算代替:
c=3e18
ABconstant = c / numpy.array(Bwavelength) ** 2 * throughput
ABflux = numpy.trapz(ABconstant, Bwavelength)
return ABflux
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