# Define a procedure, find_element,
# that takes as its inputs a list
# and a value of any type, and
# returns the index of the first
# element in the input list that
# matches the value.

# If there is no matching element,
# return -1.

def find_element(xs, target):
    index = 0
    for x in xs:
        if x == target:
            return index
        index += 1
    return -1

#print find_element([1,2,3],3)
#>>> 2

#print find_element(['alpha','beta'],'gamma')
#>>> -1

Create 08.py