I have an exercise from a book with this code snippet:
def binomial_coeff(n, k):
"""Compute the binomial coefficient "n choose k".
n: number of trials
k: number of successes
returns: int
"""
if k == 0:
return 1
if n == 0:
return 0
res = binomial_coeff(n-1, k) + binomial_coeff(n-1, k-1)
return res
the goal of the exercise is to rewrite the if statements as nested conditional expressions. I understand how to write a conditional expression e.g.
return 1 if k == 0
What am I missing here? By doing this nested, I can't seem to figure it out. PyCharm keeps complaining about that it the second part of the code is unreachable.
return 1 if k == 0 else return 0 if n == 0
return 1 if k == 0 else (0 if n == 0 else binomial_coeff(n-1, k) + binomial_coeff(n-1, k-1))
but seriously: why would you want to do that? That's insanely unreadable.