我正在尝试打印一个使用 numpy 数组和列表中的多个参数的函数，但我不断收到错误“numpy.float 64 对象不可迭代”。我在论坛上查看了关于这个主题的几个问题，并尝试了不同的答案，但似乎都不起作用（或者我可能做错了什么，我仍然是 python 的初学者），但这一切都归结为同一件事，我我被困住了，希望你们能帮忙。我使用的是 python 2.7，这是代码：
编辑：包含错误消息并将打印更改为“print(T, (obj(T),))”
from __future__ import division
import numpy as np
import random
K = np.array([1, 1, 1, 1, 1, 1, 1, 1, 1,])
x = len(K)
#Production rates and demand rates of products setup costs and holding costs (p, d, c, h)
p = np.array([193, 247, 231, 189, 159])
d = np.array([16, 16, 21, 19, 23])
#c1 = np.array([random.random() for _ in range(x)]) use these values as test values for c
c = [0.752, 0.768, 0.263, 0.152, 0.994, 0.449, 0.431, 0.154, 0.772]
h = [0.10*c[i]/240 for i in range(x)]
n = len(p)
t = [10.76, 74.61, 47.54, 29.40, 45.00, 90.48, 17.09, 85.19, 35.33]
def obj(T):
for i in range(n):
for q in range(x):
for k in range(x):
return ((1. / T) * c[q] + sum((.5*h[k]*(p[i]-d[i])* (p[i]/d[i])*(t[k])**2)))
for T in range(200, 900):
print(T, (obj(T),))
runfile('C:/Users/Jasper/Anaconda2/Shirodkar.py', wdir='C:/Users/Jasper/Anaconda2')
Traceback (most recent call last):
File "<ipython-input-1-0cfdc6b9fe69>", line 1, in <module>
runfile('C:/Users/Jasper/Anaconda2/Shirodkar.py', wdir='C:/Users/Jasper/Anaconda2')
File "C:\Users\Jasper\Anaconda2\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 714, in runfile
execfile(filename, namespace)
File "C:\Users\Jasper\Anaconda2\lib\site- packages\spyderlib\widgets\externalshell\sitecustomize.py", line 74, in execfile
exec(compile(scripttext, filename, 'exec'), glob, loc)
File "C:/Users/Jasper/Anaconda2/Shirodkar.py", line 24, in <module>
print(T, (obj(T),))
File "C:/Users/Jasper/Anaconda2/Shirodkar.py", line 21, in obj
return ((1. / T) * c[q] + sum((.5*h[k]*(p[i]-d[i])*(p[i]/d[i])*(t[k])**2)))
TypeError: 'numpy.float64' object is not iterable
