Python으로 웹 스크래퍼 만들기 - Day 5

오늘은 강의보고 퀴즈 푸는 날!

그리고 오늘부터는 영어로 내용을 정리해보려한다. 강의 자체가 영어이기도 하고, 영어 공부도 할 겸

 

주제:

Data Structures Quiz!

 

강의: #4.0 ~ #4.4 (python 자료구조)

• Organization of data using "Data structure" (자료구조는 데이터를 구조화하고 싶을 때 사용함!)
• 3 Python data structures : list, tuple, dictionary
  - List & Tuple : Ordered sequences of values
  - Dicts
  
  • List : We use square brackets to create a list and write data seperated by commas inside of the square brackets.
    ex) days = ["Mon", "Tue", "Wed"]
    • append (arguemnt -> object)
    • remove (argument -> value)
    • pop (argument -> index)
    • insert (argument -> value, object)
    • index (argument -> value, start, stop)
    • count (argument -> value)
    • sort (argument -> key, reverse)
    • reverse
    • clear
    • copy
    • extend (argument -> iterable)
      
      
  • Tuple : Tuple is almost like a list. To create a tuple, we use parenthesis instead of the square brackets. The What is the difference between a tuple and a list? a tuple is immutable which means we cannot change it.  
    ex) days = ("Mon", "Tue", "Wed")
    
    • count (argument -> value)
    • index (argument -> value, start, stop)
      
      
  • Dictionary : a word with a definition ~ key & value pair.
    curly brackets
    
    

 

• Function & Method
  • They look the same. Method is just like a function literally..!
  • Method is a function that is bound to data using a dot.

 

• Mutable <-> Immutable
  • "Modify" in the language of programmers is called "Mutate"

 

• How to access elements in list, tuple, dicts
  • Open square brackets and write the index which is the position on the list/tuple. ex) days[0]