Easiest way to tackle this web crawling task?
While this is not a great Stackoverflow question, since you are a student and it's for an internship, it seems like it would be in poor form to flag it, or down-vote it. :)
Basically, you can pretty much accomplish this task with any of the languages you listed.  If you want learning Ruby as a part of your experience for your internship, then this might be a great project and a way of learning it.  But, python would work great, also (you could probably use Mechanize). I should probably disclose that I'm a Python developer and I love it.  I think it's a great language with great support and tools.  I'm sure the Ruby guys feel the same about their language.  Again, I think it's what you want to try to accomplish during your internship.  What experience do you want to take away, etc.  Best of luck.
I currently have been assigned to create a web crawler to automate some reporting tasks I do. This web crawler would have to login with my credentials, search specific things in different fields (some in respect to the the current date), download CSVs that contain the data if there is any data available, parse the CSVs quickly to get a quick number count, create an email with the CSVs attached and send it.
I currently know C++ and Python very well, am in the process of learning C, but I was told that Ruby or Ruby on Rails was a great way to do this. Is Ruby on Rails solely for creating web apps, and if so, does my task fit the description of a web app, or can I just make a standalone program that runs and does it all?
I would like to know which language would be the easiest to code with (has easy to use modules), has a good library/module relative to these tasks. What would I need to take into account before undergoing this task? I have till the end of December to make this, and I only work here for around 12 hours per week (I'm a student, and this is for my internship). Is this feasible?
Thanks.