Python math.isclose() Method
Example
Check whether two values are close to each other, or not:
#Import math Library
import math
#compare the closeness of two values
print(math.isclose(1.233, 1.4566))
print(math.isclose(1.233, 1.233))
print(math.isclose(1.233, 1.24))
print(math.isclose(1.233, 1.233000001))
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Definition and Usage
The math.isclose() method checks whether two values are close
to each other, or not. Returns True if the values are close, otherwise False.
This method uses a relative or absolute tolerance, to see if the values are close.
Tip: It uses the following formula to compare the values: abs(a-b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)
Syntax
math.isclose(a, b, rel_tol, abs_tol)
Parameter Values
| Parameter | Description |
|---|---|
| a | Required. The first value to check for closeness |
| b | Required. The second value to check for closeness |
| rel_tol = value | Optional. The relative tolerance. It is the maximum allowed difference between value a and b. Default value is 1e-09 |
| abs_tol = value | Optional. The minimum absolute tolerance. It is used to compare values near 0. The value must be at least 0 |
Technical Details
| Return Value: | A bool value. True if the values are close, otherwise False |
|---|---|
| Python Version: | 3.5 |
More Examples
Example
Use absolute tolerance:
#Import math Library
import math
#compare the closeness of two
values
print(math.isclose(8.005, 8.450, abs_tol = 0.4))
print(math.isclose(8.005, 8.450, abs_tol = 0.5))
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