Python creates a list
One type of data built into Python is the list:
list A list is an ordered collection that you can add and remove at any time.
For example, to list the names of all the classmates in the class, you can use a list to indicate:
>>> ['Michael', 'Bob', 'Tracy'] ['Michael', 'Bob', 'Tracy']
A list is an ordered collection in the mathematical sense, that is, the elements in the list are arranged in order.
Constructing a list is very simple. According to the above code, directly
[ ] enclosing all the elements of the list is a list object. Usually, we assign a list to a variable so that we can reference the list via a variable:
>>> classmates = ['Michael', 'Bob', 'Tracy'] >>> classmates # Print the contents of the classmates variable ['Michael', 'Bob', 'Tracy']
Since Python is a dynamic language, the elements contained in the list are not required to be the same data type. We can include all kinds of data in the list:
>>> L = ['Michael', 100, True]
A list that does not have an element is an empty list:
>>> empty_list =