EX How to Convert

In Python, data types are automatically assigned to variables. You can check the type of any value using the type() function. If needed, you can also convert a value to a different data type using functions like int(), float(), str(), and bool().

Python has three numeric types. The most common are float (for numbers with decimals) and int (for whole numbers). Python will often switch between these automatically, so whether a number like 3 is stored as an int or a float often doesn’t matter in practice.

However, sometimes you may want to store a number as an integer—especially if it’s used for counting, indexing, or IDs—because integers use less memory. If you’re going to do math with decimals, it’s better to use floats.

💡 Note: Python automatically treats Boolean values in arithmetic contexts as integers: True behaves like 1 and False like 0.
For example, print(True + True) will output 2, and print(False * 100) will output 0.

The table below gives an overview of the most common data types in Python.

Data Type	check type	convert
integer	type(x) == int	int(x)
float	type(x) == float	float(x)
string	type(x) == str	str(x)

Example

value = 23.5

print(type(value))
# Output: <class 'float'>

print(int(value))
print(str(value))

boolean_var = True
print(int(boolean_var))  # Output: 1
print(True + True)       # Output: 2
print(False * 100)       # Output: 0