4 examples of 'python is nan' in Python

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22def is_nan(builder, z):
23 return builder.fcmp_unordered('uno', z.real, z.imag)
59def is_scalar_nan(x):
60 """Tests if x is NaN
61 This function is meant to overcome the issue that np.isnan does not allow
62 non-numerical types as input, and that np.nan is not np.float('nan').
63 Parameters
64 ----------
65 x : any type
66 Returns
67 -------
68 boolean
69 Examples
70 --------
71 >>> is_scalar_nan(np.nan)
72 True
73 >>> is_scalar_nan(float("nan"))
74 True
75 >>> is_scalar_nan(None)
76 False
77 >>> is_scalar_nan("")
78 False
79 >>> is_scalar_nan([np.nan])
80 False
81 """
82
83 # convert from numpy.bool_ to python bool to ensure that testing
84 # is_scalar_nan(x) is True does not fail.
85 # Redondant np.floating is needed because numbers can't match np.float32
86 # in python 2.
87 return bool(isinstance(x, (numbers.Real, np.floating)) and np.isnan(x))
82def _is_nan(log):
83 return math.isnan(log.current_row['total_gradient_norm'])
413def test_nan(sentry_init, capture_events):
414 sentry_init()
415 events = capture_events()
416
417 try:
418 nan = float("nan") # noqa
419 1 / 0
420 except Exception:
421 capture_exception()
422
423 (event,) = events
424 frames = event["exception"]["values"][0]["stacktrace"]["frames"]
425 (frame,) = frames
426 assert frame["vars"]["nan"] == "nan"

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