emzei

string에서는 한글자의 값을 바꾸는게 불가능하지만List에선 가능. example. p = ['H','e','l','l','o',] p[0] = 'Y' print p>>>['Y','e','l','l','o',] s = 'Hello's[0] = 'Y' // error ---------------------------------------------------------------------------------------------------------- >>> p = ['H','e','l','l','o']>>> q = p>>> print p,q['H', 'e', 'l', 'l', 'o'] ['H', 'e', 'l', 'l', 'o']>>> p[0] = 'Y'>>> print p['Y', 'e', 'l..

example. mixed_up=[ 'apple' , 3 , 'orange' , 27 , [ 1, 2, [ 'alpha' , 'beta' ] ] ]

Structured Data StringList Sequence of characterssequence of anything s = ' yabba! 'p = [ 'y', 'a', 'b' , 'b' , 'a' , '!' ]s[0] = 'y's[0] = 'y' s[2:4] = 'bb' s[2:4] = [ 'b', 'b' ] -> [ , , ... ]

def get_next_target(page): start_link = page.find('

Multiple Assignment : , , ... = , , ...

while : "break"while :if :Break for in :

if : example)def absolute (x):if x

parameter can be , , ... def (): page = ... contents of some web page ...start_link = page.find('

page = ... contents of some web page ...start_link = page.find('

Extracting Links ... ... page : 웹페이지의 내용을 문자열로 갖고있는 변수 ---------------------------------------------------------------------------------------quiz : page에서 '