Refer sqlContext as global variable

Question

I created an object as below :

class Pivot:

    def __init__(self, pivot_name):

        global sqlContext
        self._df = sqlContext.table(pivot_name)

In Databricks, I packaged this code in a .egg, attached it to my cluster, then, from a notebook (where sqlContext is defined directly), I tried:

import Pivot

Pivot("my_pivot")

and got error name 'sqlContext' is not defined

Is there a way my .egg package can see directly the object sqlContext or I need absolutely to pass it as an argument ?