# Learn the Bisection Method by Finding the Square Root of a Number - Step 21

### Tell us what’s happening:

I have done as requested and get the correct result in the console, but my code won’t pass the test

``````def square_root_bisection(square_target, tolerance=1e-7, max_iterations=100):
if square_target < 0:
raise ValueError('Square root of negative number is not defined in real numbers')
if square_target == 1:
root = 1
print(f'The square root of {square_target} is 1')
elif square_target == 0:
root = 0
print(f'The square root of {square_target} is 0')

else:
low = 0
high = max(1, square_target)
root = None

for _ in range(max_iterations):
mid = (low + high) / 2
square_mid = mid**2

if abs(square_mid - square_target) < tolerance:
root = mid
break

elif square_mid < square_target:
low = mid
else:
high = mid

if root is None:
print(f"Failed to converge within {max_iterations} iterations.")

else:
print(f'The square root of {square_target} is approximately {root}')

return root

# User Editable Region

N = 16
print(square_root_bisection(N))

# User Editable Region

``````

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### Challenge Information:

Learn the Bisection Method by Finding the Square Root of a Number - Step 21

1 Like

if you remove `print` it will pass, I’m opening an issue

4 Likes

Thank you - just removed and it passed