W3School TIY Editor

# 导入数学库

import math

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# 检查数值是否为有限值

print(math.isfinite(2000))

print(math.isfinite(-45.34))

print(math.isfinite(+45.34))

print(math.isfinite(math.inf))

print(math.isfinite(float("nan")))

print(math.isfinite(float("inf")))

print(math.isfinite(float("-inf")))

print(math.isfinite(-math.inf))

print(math.isfinite(0.0))