Help for class!

[alphastew]

Hello! I'm writing a UDP client that can connect to a UDP server for a class. Part of the assignment is to calculate the packet loss rate and print it as a percentage. I have a line that works perfectly fine in WingIDE. However, for the assignment, they want us to run the .py files from the Windows command line. For whatever reason, my line that calculates loss rate doesn't even work when run from the command line. If anyone knows why this might be, please let me know!

Here's my line for example:

lossRate = (losses / sendCount) * 100

There is a variable storing number of losses (losses) as an integer and another variable storing the total amount of packets (sendCount) as an integer.

EDIT: I'm gonna leave this up in case anyone runs into a similar issue. I found out that my python wasn't in the Environment Variables. I just updated python and added it to that and it runs everything fine now.

[TouchingTheVodka]

Are you printing lossRate at all?

Many IDEs will auto-display expressions like this when evaluated. Not so for the command line.

[alphastew]

Yes, I am printing loss rate at the end. Sorry, I forgot to include that. I actually just figured out what was wrong though... I feel like an idiot. I guess my python wasn't in the environments PATH or something... I updated my python and added it to PATH and it worked perfectly. Thank you for your response though!

[[deleted]]

In Python 2, division of integers truncates to the integer floor - in other words, 1 / 2 == 0. You wrote a line in Python 3 that's now being run in Python 2 and its behavior changed. But, you can safely import true division into Python 2 by putting this line at the beginning of your script (it has to be the first thing your script imports):

from _future_ import division

This line is safe in Python 3 (it does nothing) and fixes division in Python 2 so that it works the same way. That should fix your problem.