Python

To iterate over numbers: for i in range(n):
Read one line from standard input: input()
Write one line to standard output: print(...)
Write without a newline: print(..., end="")
Functions and fields use snake_case
Classes should be capitalized.
The null type is None
/ is floating point division, // is integer division.
collections have no size or length method, use len(...) to check.
If a collection is empty, it is considered falsy. So to check if a list is empty: if not mylist
A directory of python scripts is called a “module”. a bunch of modules is a “package”.
There is no private field, they just prefix it with an underscore.

Gotchas