Python basic - .format & List & Tuples & Dictionaries

Python prefers snake casing

- if you have multiple words inside a variable name, you separate them out by underscores.

ex. name_of_var = 2

print() function

no quotes, no out cell 

.format()

insert objects into a string.

 

Label the variables

The point is that we don't need to worry about the order 

List (=arrays in other languages)

Using indexing

- Python supports negative indexing

Changing an item in the list
- 변경 후 run하면 변경사항이 안보이지만, 리스트를 다시 run하면 변경사항이 나타난다.

 

Appending item in the list 

list.append('')

Grabbing an item in the nested list

Dictionaries aka hash tables in other languages
* dictionaries in python do not retain any order
This is a really great way to store things where you need really quick access.

Boolean

False = 0

True = 1

Tuples

- parenthesis  사용

- Tuples are immutable(can't reassign the items
  Compare to the list, in Tuples, a user can't change anything inside of this sequence 

Sets

- Looks a lot like a dictionary, except there's no key value pair.