Python 类型错误：“numpy.float64”对象不可调用
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TypeError: 'numpy.float64' object is not callable
提问by user2963265
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
所以，我试图做的是从给定 > 范围的数组中的某些位置获取某些数字并将它们放入一个方程中
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..
我试着运行它，我得到了这个..
----> ((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.. 我怎样才能在数组中使用某些数字并将它们放入一个方程中？
回答by Ignacio Vazquez-Abrams
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:
坏的：
(a)(b)
(unless ais a function)
（除非a是一个函数）
Good:
好的：
(a) * (b)
回答by Akavall
You are missing *when multiplying, try:
您*在乘法时丢失了，请尝试：
import numpy as np
yy = np.arange(4)
xx = np.arange(5)
Area = ((xx[2] - xx[1])*(yy[2] + yy[1])) / 2
回答by mrk
This error also occurs when your function has the same name as your return value
当您的函数与返回值同名时也会发生此错误
def samename(a, b):
samename = a*b
return samename
This might be a super rookie mistake, I am curious how often this answer will be helpful.
这可能是一个超级菜鸟的错误，我很好奇这个答案有多少帮助。
