define methods in another file

[Python_n00b_06]

If Python does not require the use of a header file, as in C++, then how would it work? Does each portion of the complete code have to be segregated by brackets, or can it just be written and the IDE or Python understand what you want and does it?

Should've checked grammar:
If Python does not require the use of a header file, "unlike in C++", then how would it work? Does each portion of the complete code have to be segregated by brackets, or can it just be written and the IDE or Python understand what you want and does it?

I am asking how would the code look without a header file in Python? Could someone link me a good example?