emzei

ex.element = { 'hydro':1, 'helium':2, 'carbon':6} - key에 따른 value가 있음.- 순서가 없음- 기존의 list lookup/update와 다른 방식 ex. >>> print element{'carbon': 6, 'helium': 2, 'hydro': 1} >>> print element['hydro']1 // 'hydro'의 value가 출력 >>> print element['oxyzen']Traceback (most recent call last): File "", line 1, in print element['oxyzen']KeyError: 'oxyzen'// key가 존재하지 않을 경우 : error >>> element['carbon']=12// k..

String : 'hello'- sequence of character- immutableerror : s[i] = 'x'- s[i] : i th character in s List : ['alpha', 23]- list of elements- mutable- p[i] : i th element of p Dictionary : { 'hydrogen':1 , 'helium' : 23 }- set of pairs- mutable- d[k] : k : keyvalue associated with k in d