Before learning of the content: particularly complex variable = value, the programming will become. General programming language storage methods are provided a plurality of values stored in python, we call it a container
list file (corresponding to one kind similar: linked list implementation)
Is a list, or implement array [] is a list of definitions:
Weak data type values are defined by
The second definition method: [] values row there can be null
We can access elements in the list: the subscript (subscript re-start at 0, 2, 3)
NOTE: There is a [4] in my definition of a, if you enter a [4] will get an error, it says "subscript out of range"
How do you know how much data a in a total of, we can use the function len
len function: returns the number of containers
Length of the container can be obtained
Traversal: one by one over again
List may be stored in any form, for loop values listed in the list one by one
Elements: In the list, we can use the index to access elements
append: represent adding new elements at the end of the list
insert: add new elements expressed in a particular location
clean: the empty container
remore: the element itself will be removed by elemental
index: find the location of elements in the list, if the element does not exist, an exception is thrown
reverse: reverse list
sort: sort the list
copy: copy objects
extend: merge list
set collection
Disorder and can not be repeated (no subscript)
add: add an element
remove: Removes the specified element
interstation: Intersection
difference：差集
union: union
tuple tuple
dict dictionary