abs
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"""Absolute Value."""
def abs_val(num):
"""
Find the absolute value of a number.
>>> abs_val(-5.1)
5.1
>>> abs_val(-5) == abs_val(5)
True
>>> abs_val(0)
0
"""
return -num if num < 0 else num
def test_abs_val():
"""
>>> test_abs_val()
"""
assert 0 == abs_val(0)
assert 34 == abs_val(34)
assert 100000000000 == abs_val(-100000000000)
if __name__ == "__main__":
print(abs_val(-34)) # --> 34