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Python | sympy.sets.Lopen() method
• Last Updated : 19 Jul, 2019

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

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

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

 `# import sympy``from` `sympy.sets ``import` `Interval`` ` `# Use sympy.sets.Lopen() method``gfg ``=` `Interval.Lopen(``0``, ``10``)``print``(gfg)``   ` `print``(gfg.contains(``8``))`

Output :

(0, 10]
True

Example #2 :

 `# import sympy``from` `sympy.sets ``import` `Interval`` ` `# Use sympy.sets.Lopen() method``gfg ``=` `Interval.Lopen(``0``, ``3``)``print``(gfg)``   ` `print``(gfg.contains(``0``))`

(0, 3]
False

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