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UP my solution #77

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UP my solution #77

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15 changes: 13 additions & 2 deletions numpy_questions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,13 @@ def max_index(X):
j = 0

# TODO

if X is None:
raise ValueError("Input X cannot be None")
if not isinstance(X, np.ndarray):
raise ValueError("Input X must be a numpy array")
if len(X.shape) != 2:
raise ValueError("Input X must be a 2D numpy array")
i, j = np.unravel_index(X.argmax(), X.shape)
return i, j


Expand All @@ -64,4 +70,9 @@ def wallis_product(n_terms):
"""
# XXX : The n_terms is an int that corresponds to the number of
# terms in the product. For example 10000.
return 0.
if n_terms == 0:
pi_approx = 1 * 2
pi_approx = 1
for n in range(1, n_terms+1):
pi_approx *= (4 * n**2)/((4 * n**2) - 1)
return pi_approx * 2
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