So, what im trying to do is get certain numbers from certain positions in a array of a given > range and put them into an equation
因此，我想要做的是从给定>范围的数组中的某些位置获取某些数字并将它们放入等式中
yy = arange(4)
xx = arange(5)
Area = ((xx[2] - xx[1])(yy[2] + yy[1])) / 2
I try to run it and I get this..
我尝试运行它，我得到了..
----> ((xx[2] - xx[1])(yy[2] + yy[1])) / 2
TypeError: 'numpy.int64' object is not callable
I get error.. how can I use certain numbers in an array and put them into an equation?
我得到错误..如何在数组中使用某些数字并将它们放入等式中？
2 个解决方案
#1
11
Python does not follow the same rules as written math. You must explicitly indicate multiplication.
Python不遵循与书面数学相同的规则。您必须明确指出乘法。
Bad:
(a)(b)
(unless a is a function)
（除非a是函数）
Good:
(a) * (b)
#2
5
You are missing * when multiplying, try:
在乘法时你缺少*，试试：
import numpy as np
yy = np.arange(4)
xx = np.arange(5)
Area = ((xx[2] - xx[1])*(yy[2] + yy[1])) / 2
#1
11
Python does not follow the same rules as written math. You must explicitly indicate multiplication.
Python不遵循与书面数学相同的规则。您必须明确指出乘法。
Bad:
(a)(b)
(unless a is a function)
（除非a是函数）
Good:
(a) * (b)
#2
5
You are missing * when multiplying, try:
在乘法时你缺少*，试试：
import numpy as np
yy = np.arange(4)
xx = np.arange(5)
Area = ((xx[2] - xx[1])*(yy[2] + yy[1])) / 2