python
1.for / String Methods
문제 1. > pages 는 find를 통해 생성된 여러 a 의 list. pages 에서 span을 찾으려 했으나 에러발생. > for와 find를 이용하여 list 안에 각각의 요소들에서 원하는 값을 찾아낸다. 문제 2. > 불필요한 span까지 출력된다.
2.default value parameter
(a,b) are positional parameter(c=none) is optional parameter(r="w") is keyword parameter(d=\[]) is list parameter(\*ae) is keyword-only(\*\*ab) is var
3.Parameter Order
Parameter/Argument
4. sys.modules/path, built-in modules
sys.modules > dictionary including imported modules and packages. sys.path > list of strings(path of files) sys? > https://docs.python.org/3/library/sys.html#sys.builtinmodulenames ('abc', 'ast',...
5.List / Tuple, Sets/Dictionaries
Lists > Lists are mutable sequences, typically used to store collections of homogeneous items. Using a list comprehension: [x for x in iterable] Tupl
6.python memo
concatenating / f string https://www.datacamp.com/community/tutorials/f-string-formatting-in-python list / dictionary > Lists are ordered sets of ob