need small help for simple calculation

[desul]

Dear All,


how to calculate the below problem:

from __future__ import division

4/6

Out[3]: 0.6666666666666666


when I am trying for this - 

5/ 0= 

out: ZeroDivisionError: division by zero

how can solve it?

actually, i  don't known value of two variables 

e.g. [a] = ? ( may be 0, 1, 2, 3, 4,5)
       [ b]= ? (may be 0, 1, 2, 3,4,5)

want to calculate the division of a and b 

thanks in advance       

[Ofnuts]

You can't divide by 0 (this is a mathematical constraint, not specific to Python). So you have to test the value of the divisor and, if it is zero, issue some error message instead of doing the division.

[wavic]

You can do two two things.
Catch if the variable is zero

if var1 == 0 == var2:
    result = var1 / var2

Or catch the error

try:
    result = var1 / var2
except ZeroDivisionError:
    # do

The second way is faster but do not use it if not pass it in the class.

[buran]

if var1 == 0 == var2:
    result = var1 / var2

well var1 == 0 == var2 is True only when both var1 and var2 are 0 and that definitely does not solve the Division by zero error, but anyway that would be the least of the problems :-)

---

The second way is faster but do not use it if not pass it in the class.

Not sure what you mean by that...

[zivoni]

Maybe Wavric ment: Use try/except clausule only if it was already explained in the class (assuming that this is a class homework)?

[buran]

Maybe Wavric ment: Use try/except clausule only if it was already explained in the class (assuming that this is a class homework)?

Aha, THAT class...

[wavic]

Right! Anyway, I am not really sure if it is a faster method in all cases. For such a simple tasks like this. I can't test now.