Why is this code returning as invalid syntax on Phyton 3.6.0? Code is supposed t

Question

Why is this code returning as invalid syntax on Phyton 3.6.0?

Code is supposed to implement a function with Python protoype (def bhatt_dist(D1, D2, n) which computes the Bhattacharyya distance between D1 and D2.

D1 = [1/2, 1/2] and D2 = [59/100, 41/100] should be used as a test case (the correct output is given above).

The math library needs to be included which is: import math in Python.

The main function that is needed from math is the natural logarithm, which is denoted as math.log .

import math
def bhatt_dist(D1, D2, n):
BCSum = 0
for i in range(n):
BCSum += math.sqrt(D1[i] * D2[i])
DBValue = - math.log(BCSum)
return DBValue
  
D1 = [1 , 2, 1, 2]
D2 = [ 59 ,100, 41, 100]
print bhatt_dist(D1, D2, 2)

Explanation / Answer

In python 3.x, print statement must contains parenthesis. Compiled code is given as:

import math
def bhatt_dist(D1, D2, n):
BCSum = 0
for i in range(n):
BCSum += math.sqrt(D1[i] * D2[i])
DBValue = - math.log(BCSum)
return DBValue
  
D1 = [1 , 2, 1, 2]
D2 = [ 59 ,100, 41, 100]
print (bhatt_dist(D1, D2, 2))

Output:

-3.0829773527647757

Hope it helps, do give your response.

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