3 Simple Questions About Python/IDLE

[Omar]

1) why don't python / idle use numbered lines in their scripting, like
basic?  how do you keep track of large batches of code without them?

2) in IDLE, how do you save a program such that it can be run, say from
windows the "run" function?

3) are most of you doing your script editing in IDLE or something more
fully featured?

4) how are you importing previously written blocks of code into your
code?  cut and paste?  what is the best way to organize snippets of
code?

thanks, peeps