get_triangle_area.py

from math import sqrt 
 
def get_triangle_area(a,b,c): 
    ''' Given triangle side lengths a,b,c returns the area of the triangle ''' 
     
    assert a > 0 and b > 0 and c > 0, "Side lengths must be positive" 
     
    s = (a+b+c)/2  
     
    area = sqrt(s*(s-a)*(s-b)*(s-c)) 
     
    return area 
     
 
a = 3 
b = 4 
c = 5 
 
print(get_triangle_area(a,b,c))