Dict Methods

Python · Methods reference

Python · Methods reference

📋 Overview

All dict instance methods (Python 3.7+ ordered, 3.9+ merge operators).

🔧 Methods

Instance methods

Method	Mutates?	Description
`clear()`	yes	Remove all items
`copy()`	no	Shallow copy
`get(key[, default])`	no	Value or default without KeyError
`pop(key[, default])`	yes	Remove key and return value
`popitem()`	yes	Remove and return last inserted (LIFO) pair
`setdefault(key[, default])`	yes	Get or insert default
`update([other])`	yes	Merge mappings / kwargs
`keys()`	no	View of keys
`values()`	no	View of values
`items()`	no	View of (key, value) pairs
`fromkeys(iterable[, value])`	—	Class method: new dict with keys

Operators (3.9+)

Operator	Description
`d1	d2`
`d1	= d2`
`d[key]`	Get; KeyError if missing
`key in d`	Membership on keys

💡 Examples

See parent topic notes for runnable snippets; this page is the complete method index.

⚠️ Pitfalls

Mutating methods return None in Python — do not chain sort() / reverse() expecting a new list.
Default JS sort() compares strings — pass (a,b) => a-b for numbers.
SQL function names differ by dialect — verify Postgres vs MySQL docs.
Django QuerySet.update() skips save() signals and auto auto_now fields on models.

Dictionaries

Bytes & Bytearray Methods

Python · Methods reference

List Methods

Python · Methods reference

On this page

📋 Overview 🔧 Methods Instance methods Operators (3.9+)💡 Examples ⚠️ Pitfalls 🔗 Related