List Type Built-in Methods
You may recall our earlier discussion of accessing object attributes using the dotted attribute notation: object.attribute. List methods are no different, using list.method([arguments]). We use the dotted notation to access the attribute (here it is a function), then use the function operators ( ( ) ) in a functional notation to invoke the methods.
Types that have methods generally have an attribute called object.__methods__ which name all the methods that are supported by that type. In our case for lists, list.__methods__ serves this purpose.
Following table demonstrates the methods used with lists :
| Format Symbol | Conversion |
|---|---|
| list.append(obj) | appends object obj to list |
| list.count(obj) | returns count of how many times obj occurs in list |
| list.extend(seq) | appends the contents of seq to list |
| list.index(obj) | returns the lowest index in list that obj appears |
| list.insert(index, obj) | inserts object obj into list at offset index |
| list.pop(obj=list[-1]) | removes and returns last object or obj from list |
| list.remove(obj) | removes object obj from list |
| list.reverse() | reverses objects of list in place |
| list.sort([func]) | sorts objects of list, use compare func if given |
