# Python | sympy.sets.open() method

• Last Updated : 19 Jul, 2019

With the help of `sympy.sets.open()` method, we can make a set of values by setting interval values like right open or left open that means a set has right open bracket and left open brackets by using `sympy.sets.open()` method.

Syntax : `sympy.sets.open(val1, val2)`
Return : Return set of values with right and left open set.

Example #1 :
In this example we can see that by using `sympy.sets.open()` method, we are able to find the set of values by defining right and left open brackets.

 `# import sympy``from` `sympy.sets ``import` `Interval`` ` `# Use sympy.sets.open() method``gfg ``=` `Interval.``open``(``0``, ``10``)``print``(gfg)``   ` `print``(gfg.contains(``0``))`

Output :

(0, 10)
False

Example #2 :

 `# import sympy``from` `sympy.sets ``import` `Interval`` ` `# Use sympy.sets.open() method``gfg ``=` `Interval.``open``(``0``, ``5``)``print``(gfg)``   ` `print``(gfg.contains(``4``))`

(0, 5)
True

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