W3School TIY Editor

# 导入数学库 import math # 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))