numpy.sign(array [, out]) function is used to indicate the sign of a number element-wise.
For integer inputs, if array value is greater than 0 it returns 1, if array value is less than 0 it returns -1, and if array value 0 it returns 0.
Syntax: numpy.sign()
Parameters :
array : [array_like] Input values.
out : [ndarray, optional] Output array placed with result.
Return : [ndarray] Returns the sign of array. If an array is scalar then the sign of array will be scalar.
Code 1 :
Output :
array1 : [1, 0, -13]
array2 : [-1, 0, 15]
Check sign of array1 : [ 1 0 -1]
Check sign of array2 : [-1 0 1]
Code 2 :
