cMath module contains a number of functions which is used for mathematical operations for complex numbers. The cmath.isfinite() function is used to check whether the value is finite, or not. The value passed in this function can be int, float, and complex numbers.

Syntax: cmath.isfinite(x)

Parameter:This method accepts the following parameters.

• x :This parameter is the value to check for finite.

Returns:This method returns a Boolean value.

Below examples illustrate the use of above function:

Example #1 : 

# Python code to implement
# the isfinite()function
      
# importing "cmath"
# for mathematical operations  
import cmath 
  
# using cmath.isfinite() method 
val = cmath.isfinite(1 + 2j) 
print(val)

Output:

True

Example 2:

# Python code to implement
# the isfinite()function
      
# importing "cmath"
# for mathematical operations  
import cmath 
  
# using cmath.isfinite() method 
val = cmath.isfinite(complex(3.0, float('inf')))
print(val) 

Output:

False