A quick-reference table covering all four built-in data structures in Python — List, Tuple, Set, and Dictionary.

Feature / Method List Tuple Set Dictionary
Structure Single items Single items Single items Key-Value pairs
Order Ordered Ordered Unordered Ordered
Mutability Mutable Immutable Mutable Mutable
Duplicates Allowed Allowed Not allowed Keys unique / Values duplicate
Datatype Combinations Mixed types allowed Mixed types allowed Mixed types (Hashable only) Mixed types (Keys must be hashable)
Syntax [ ] ( ) { } { : }
append True — — —
extend True — — —
insert True — — —
remove True — True —
pop True — True True
clear True — True True
index True True — —
sort True — — —
count True True — —
reverse True — — —
copy True — True True
add — — True —
discard — — True —
union — — True —
intersection — — True —
difference — — True —
issubset / isdisjoint — — True —
keys — — — True
values — — — True
items — — — True
get — — — True
update — — — True
popitem — — — True
setdefault — — — True
map True True True True
filter True True True True

Legend

  • True — Method available
  • — — Method not available
  • Tuple is immutable, so it supports only index and count out of all mutating / modifying methods.
  • Set members must be hashable (no lists, dicts, or other sets as elements).
  • Dict keys must also be hashable; values can be any type.