Python provides several built-in data types to store different kinds of values.

Among them, five data types are called Fundamental Data Types.

These data types are used frequently in Python programs.

The five fundamental data types in Python are:

1. int
2. float
3. complex
4. bool
5. str

These are the basic data types used to store values in Python.

Python does not have a separate char data type.

A single character is also stored as a str object.

In Python 2, there was a separate long data type.

In Python 3, the long data type has been removed.

All integer values, including very large numbers, are stored using the int data type.

An object is called Immutable if its value cannot be changed after it is created.

If you assign a new value, Python creates a new object instead of modifying the existing object.

The following fundamental data types are immutable:

• int
• float
• complex
• bool
• str

Once an object of these types is created, its value cannot be changed.

The memory address changes because Python creates a new object.

The existing integer object is not modified.

A new string object is created.

The previous string object remains unchanged.

Once a bytes object is created, its values cannot be changed.

The bytes data type is immutable.

bytearray is almost the same as bytes.

The difference is that bytearray is mutable.

Its elements can be modified after creation.

Immutable	Mutable
Object cannot be changed after creation.	Object can be changed after creation.
A new object is created when the value changes.	The same object is modified.

Data Type	Immutable
int	✔ Yes
float	✔ Yes
complex	✔ Yes
bool	✔ Yes
str	✔ Yes

• Python has five fundamental data types: int, float, complex, bool, and str.
• Python does not have a separate char data type.
• A single character is stored as a str.
• Python 3 does not have the long data type.
• All fundamental data types are immutable.

• Fundamental data types are the basic data types in Python.
• Python stores characters using the str data type.
• Python 3 uses only the int data type for all integer values.
• Immutable objects cannot be modified after creation.
• When an immutable object's value changes, Python creates a new object.
• bytearray is mutable, whereas bytes is immutable.

Topic	Description
Fundamental Data Types	int, float, complex, bool, str
Character Type	No separate char data type
Long Type	Removed in Python 3
Immutable Types	int, float, complex, bool, str
Mutable Example	bytearray
Immutable Example	bytes