python整数除法错误 - 以零为模 - 但除数！= 0
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python integer division error - modulo by zero - BUT divisor != 0
提问by ccdpowell
I am new to doing simple math using python, so sorry if this is a silly question.
我是使用 python 做简单数学的新手，如果这是一个愚蠢的问题，很抱歉。
I have 8 variables that are all set to integers and these integers are used when performing a simple calculation.
我有 8 个变量都设置为整数，并且在执行简单计算时使用这些整数。
a = 0
b = 17
c = 152
d = 1
e = 133
f = 19
g = 20
h = 0
answer = ( ( ( a / f ) + b + c ) - ( g + ( h / f ) ) ) / ( d / f )
print answer
When I run this code, I get the error, ZeroDivisionError: integer division or modulo by zero.
当我运行此代码时，出现错误 ZeroDivisionError: integer Division or modulo by zero。
I have read about this error and all documentation points towards my divisor being zero, but if I print this with the numbers as strings in place of the variables, I get:
我已经阅读了有关此错误的所有文档，并且所有文档都指出我的除数为零，但是如果我使用数字作为字符串代替变量来打印它，我会得到：
( ( ( 0 / 19 ) + 17 + 152 ) - ( 20 + ( 0 / 19 ) ) ) / ( 1 / 19 )
Nowhere in this statement is the divisor zero.
该语句中没有除数零。
Please let me know how I need to change my expression in order to get the answer 2831. Note that I can change the type of the variables to a float or other. Thank you for your help!
请让我知道我需要如何更改表达式才能获得答案 2831。请注意，我可以将变量的类型更改为浮点数或其他类型。感谢您的帮助！
采纳答案by Rohit Jain
Probably you are using Python 2.x, where x / yis an integer division.
也许你正在使用Python 2.x，其中x / y的一个integer division。
So, in the below code: -
所以，在下面的代码中： -
( 20 + ( 0 / 19 ) ) ) / ( 1 / 19 )
1 / 19is an integer division, which results in 0. So the expression is essentially same as: -
1 / 19是integer division，结果为0。所以表达式本质上是一样的： -
( 20 + ( 0 / 19 ) ) ) / 0
Now you see where the error comes from.
现在您看到错误的来源。
You can add following import in you pythoncode, to enforce floating-point division: -
您可以在python代码中添加以下导入，以强制执行浮点除法：-
from __future__ import division
Or you could cast one of the integers to a float, using either float()or just by adding .0to the initial value.
或者您可以将其中一个整数转换为浮点数，使用float()或仅通过添加.0到初始值。
回答by YardenST
from __future__ import division
and than do your calculation
而不是你的计算
it will cause the division to return floats
它会导致除法返回浮点数
回答by user11156442
This should work. Here's my code:
这应该有效。这是我的代码：
a = 0
b = 17
c = 152
d = 1
e = 133
f = 19
g = 20
h = 0
answer = ( ( ( a / f ) + b + c ) - ( g + ( h / f ) ) ) / ( d / f )
print(answer)
Nearly exactly same.
几乎完全一样。
