Data Type for Numbers in Python

Python has three types of numeric data types. They are:

• int
• float
• complex

int

The int data type is a numeric type without fractional point.

Example:

x = 100
print(x)
  

Output:

float

The float data type is a numeric type with fraction point.

Example:

x = 100.70
y = 53e43
print(x)
print(y)
  

Output:

complex

The complex data type is a numeric type with real and imaginary components denoted by j character.

Example:

z = 7j
print(z)
  

Output:

Type Conversion

There are functions such as int(), float(), complex() available in Python to convert a numeric value from one type to another.

The int() function is used to convert a string or float value to int type.

Example:

a = "10"
b = 20.28

#convert from string to int
print(int(a))

#convert from float to int
print(int(b))

Output:

The float() function is used to convert a string or int value to float type.

Example:

a = "174.57"
b = 20

#convert from string to float
print(float(a))

#convert from int to float
print(float(b))

Output:

The complex() function is used to convert a string, int or float value to complex type. This method accepts two optional arguments and returns a complex number. The first parameter is referred to as a real part, whereas the second is referred to as an imaginary part.

Example:

a = "177"
b = 50
c = 140.64

#convert from string to complex using single parameter
print(complex(a))

#convert from int to complex using double parameters
print(complex(b, 5))

#convert from float to complex using double parameters
print(complex(c, 7))

Output:

Note: A complex number cannot be converted into int or float type.