get index of element grate than 10 ]in dataframe code example

Example: find index of values greater than python

>>> [i for i,v in enumerate(a) if v > 4]
[4, 5, 6, 7, 8]
#enumerate returns the index and value of each item in an array. 
#So if the value v is greater than 4, include the index i in the new array.