Python中的 numpy.isreal()
numpy.isreal(array) :按元素测试它是否是实数(不是无穷大或不是不是数字)并将结果作为布尔数组返回。
参数 :
array : [array_like] Input array whose element we want to test
返回 :
boolean array containing the result
代码 1:
Python
# Python Program illustrating
# numpy.isreal() method
import numpy as geek
print("Is Real : ", geek.isreal([1+1j, 0j]), "\n")
print("Is Real : ", geek.isreal([1, 0]), "\n")
Python
# Python Program illustrating
# numpy.isreal() method
import numpy as geek
# Returns True/False value for each element
a = geek.arange(20).reshape(5, 4)
print("Is Real : \n", geek.isreal(a), "\n")
# Returns True/False value as ans
# because we have mentioned dtype in the beginning
a = geek.arange(20).reshape(5, 4).dtype = float
print("\nIs Real : ", geek.isreal(a))
输出 :
Is Real : [False True]
Is Real : [ True True]
代码 2:
Python
# Python Program illustrating
# numpy.isreal() method
import numpy as geek
# Returns True/False value for each element
a = geek.arange(20).reshape(5, 4)
print("Is Real : \n", geek.isreal(a), "\n")
# Returns True/False value as ans
# because we have mentioned dtype in the beginning
a = geek.arange(20).reshape(5, 4).dtype = float
print("\nIs Real : ", geek.isreal(a))
输出 :
Is Real :
[[ True True True True]
[ True True True True]
[ True True True True]
[ True True True True]
[ True True True True]]
Is Real : True
参考 :
https://docs.scipy.org/doc/numpy-dev/reference/generated/numpy.isreal.html#numpy.isreal
笔记 :
这些代码不会在在线 IDE 上运行。因此,请在您的系统上运行它们以探索其工作原理。