How to use 'python atan2' in Python

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39def safe_atan2(y, x):
40 if x == 0.0:
41 if y > 0:
42 return pi / 2.0
43 else:
44 return -pi / 2.0
45 else:
46 return atan2(y, x)
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26@wrap(['space', float])
27def acos(space, d):
28 """ acos - Arc cosine """
29 try:
30 return space.wrap(math.acos(d))
31 except OverflowError:
32 return space.wrap(rfloat.INFINITY)
33 except ValueError:
34 return space.wrap(rfloat.NAN)

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