<aside> 💡 All assignments are marked by Python 3.10.5
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A type defines possible values & operations (for objects).
An object is a value in memory referenced by an identifier.
A value is a set of bits interpreted according to a type.
A variable is a named object.
A literal is a notation for representing a fixed value in source code.
| Type | Description | Comments |
|---|---|---|
NoneType |
Defines null objects and variables | None |
bool |
Boolean values | True or False |
int |
Integer | unbounded integer |
float |
Floating point numbers | 64-bit floating point |
complex |
Complex numbers | complex number |
str |
Strings | sequence of characters |
list |
Lists | |
dict |
Dictionaries | |
tuple |
Tuples |
| Object Type | Description |
|---|---|
| Files | Files created using the open() function |
| Program unit types | Functions, modules, classes |
| Implementation-related types | Compiled code, stack tracebacks |
Use type() to know an object’s type.
Immutable: an object whose state cannot be modified after it is created
str, tupleMutable: an object whose state can be modified after it is created
list, dict