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Pythonic Programming
Syntax
use parenthesis for long-line wrapping
use r"C:\temp.txt" for raw strings
Backslashes not interpreted as escapes
ideal for Windows file paths
use "".join(list) to join a list of strings
add spaces or commas as needed, " ".join(list), ", ".join(list)
use generator functions, "".join(fn(i) for i in items)
use collections.defaultdict() to create dictionaries with default factory functions
use locals() for named string formatting
Use a list comprehension when a computed list is the desired end result.
[n ** 2 for n in range(10) if n % 2]
all values calculated at once
greedy evaluation
Use a generator expression when the computed list is just an intermediate step.
values calculated as needed
use lists instead of concatenating strings using the "+=" operator.
huge memory saver
huge speed improvement
can be joined before output
