Dealing with files...

[lost]

Hi guys!
I'm starting to deal with files, and need to know how to deal directly
with the filesystem. what I'm looking for, is similar to this pseudo code:

for each_file in "/var/path/to/files/":
	print each_file #show the NAME of the file 
	write the NAME of the file	into file_list.txt
print "done"

This would print the name of each file in /var/path/to/files (for example,
a list of html files), and then add the name of the file into
file_list.txt.

Any help on this would be very much appreciated! Thanks.