#!python3
"""
Create a function that determines the largest number in a list of values and returns it.
1 input parameter:
list: the numbers to be checked for the largest value
return: float value of the largest number
Sample assertions:
assert largest([3,10,3]) == 10
"""

def largest(x):
    x = list(x)
    return max(x)

assert largest([3,10,3]) == 10