W3School TIY Editor

# 导入数学库 import math # 检查某些值是否为无穷大 print(math.isinf(56)) print(math.isinf(-45.34)) print(math.isinf(+45.34)) print(math.isinf(math.inf)) print(math.isinf(float("nan"))) print(math.isinf(float("inf"))) print(math.isinf(float("-inf"))) print(math.isinf(-math.inf))