what does 'for _ in range()' mean?

[Matteo Dell'Amico]

Roy Smith wrote:

> I've never heard of that convention before.  Is it some python-specific 
> thing, or is my ignorance more global in scope?

I have seen it in logic and functional programming, where '_' - 
differently from python - has a special meaning: assignments to '_' are 
discarded in functional programming and

I guess that it's value in the interpreter, instead, comes from perl's $_.

> In any case, I'd vote for some more useful variable name.  In the above 
> case, something like connectionNumber or whatever would be more 
> self-explanitory.

In that case, I interpret is as this: that loop has to be iterated 20 
times, and the looping variable is uninfluent. In this cases, again by 
convention, in C programs the variable is often called "i".

-- 
Ciao,
Matteo