list¶

Lists are mutable ordered and indexed collections of objects. The items of a list are arbitrary Python objects. Lists are formed by placing a comma-separated list of expressions in square brackets. (Note that there are no special cases needed to form lists of length 0 or 1.)

Constructors¶

list(): Converts an object into a list.
[] list comprehensions: Returns a list based on existing iterables.
literal syntax: Initializes a new instance of the list type.

Methods¶

Adding Elements¶

insert: Inserts an item at a given position.
append: Adds an item to the end of the list.
extend: Extends the list by appending all the items from the iterable.

Deleting¶

remove: Removes the first item from the list which matches the specified value.
pop: Removes and returns the item at the specified index.

Information¶

index: Returns the index of the first occurrence of the specified list item.
count: Returns the number of times the specified item appears in the list.

Modifying¶

sort: Sorts the list in place.
reverse: Reverses the elements of the list, in place.

Functions¶

len: Returns an int type specifying number of elements in the collection.
min: Returns the smallest item from a collection.
max: Returns the largest item in an iterable or the largest of two or more arguments.
cmp: Compares two objects and returns an integer according to the outcome.
sum: Returns a total of the items contained in the iterable object.
sorted: Returns a sorted list from the iterable.
reversed: Returns a reverse iterator over a sequence.
all: Returns a Boolean value that indicates whether the collection contains only values that evaluate to True.
any: Returns a Boolean value that indicates whether the collection contains any values that evaluate to True.
enumerate: Returns an enumerate object.
zip: Returns a list of tuples, where the i-th tuple contains the i-th element from each of the argument sequences or iterables.

Operators¶

[] (index operator): Gives access to a sequence’s element.
[::] (slicing): Gives access to a specified range of sequence’s elements.
+ (concatenation): Returns a concatenation of two sequences.
* (multiple concatenation): Returns a sequence self-concatenated specified amount of times.