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• bin
• data_types
  • collections
• filter
  • map
    • python/docs/reference/expressions/lambda
  • python/docs/reference/expressions/lambda
• int
• math
  • gcd
• re
  • sub

Nodes

filter
content	filter(function, iterable): Construct an iterator from those elements of iterable for which function is true. iterable may be either a sequence, a container which supports iteration, or an iterator.
children	python/docs/reference/expressions/lambda, map (map/filter pairing)
parents	python/docs/stdlib, leetcode/problems/125_valid_palindrome
hyperlink	https://docs.python.org/3/library/functions.html#filter

map
content	map(function, iterable, *iterables): Return an iterator that applies function to every item of iterable, yielding the results. If additional iterables arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel.
children	python/docs/reference/expressions/lambda
parents	python/docs/stdlib, leetcode/problems/125_valid_palindrome, filter
hyperlink	https://docs.python.org/3/library/functions.html#map

data_types
content	Data types modules
children	data_types/collections
parents	python/docs/stdlib
hyperlink	https://docs.python.org/3/library/datatypes.html

int
content	int() constructor base 2.
parents	leetcode/problems/67_add_binary
remarks	2 args is base. int("11", 2) would be a value in binary,
hyperlink	https://docs.python.org/3/library/functions.html#int

bin
content	bin(): convert an integer number to a binary string prefixed with "0b".
parents	leetcode/problems/67_add_binary
hyperlink	https://docs.python.org/3/library/functions.html#bin

re
content	re: regular expressions
children	re/sub
parents	python/docs/stdlib
hyperlink	https://docs.python.org/3/library/re.html

math
content	math
children	math/gcd
hyperlink	https://docs.python.org/3/library/math.html