numpy.reciprocal() in Python Last Updated : 04 Dec, 2020 Comments Improve Suggest changes Like Article Like Report The numpy.reciprocal() is a mathematical function that is used to calculate reciprocal of all the elements in the input array. Syntax :numpy.reciprocal(x, /, out=None, *, where=True) Parameters : x[array_like]: Input array or object whose elements needed to test. out [ndarray, optional]: A location into which the result is stored. --> If provided, it must have a shape that the inputs broadcast to. --> If not provided or None, a freshly-allocated array is returned. **kwargs : Allows to pass keyword variable length of argument to a function. Used when we want to handle named argument in a function. where [array_like, optional]: True value means to calculate the universal functions(ufunc) at that position, False value means to leave the value in the output alone. Return : y : ndarray. This is a scalar if x is a scalar. Note: For integer arguments with absolute value larger than 1, the result is always zero because of the way Python handles integer division. For integer zero the result is an overflow. Code #1 : Python3 # Python3 code demonstrate reciprocal() function # importing numpy import numpy as np in_num = 2.0 print ("Input number : ", in_num) out_num = np.reciprocal(in_num) print ("Output number : ", out_num) Output : Input number : 2.0 Output number : 0.5 Code #2 : Python3 # Python3 code demonstrate reciprocal() function # importing numpy import numpy as np in_arr = [2., 3., 8.] print ("Input array : ", in_arr) out_arr = np.reciprocal(in_arr) print ("Output array : ", out_arr) Output : Input array : [2.0, 3.0, 8.0] Output array : [ 0.5 0.33333333 0.125 ] Code #3 : Exception in reciprocal() function. Result is always zero. Python3 # Python3 code demonstrate Exception in reciprocal() function # importing numpy import numpy as np in_arr = [2, 3, 8] print ("Input array : ", in_arr) out_arr = np.reciprocal(in_arr) print ("Output array : ", out_arr) Output : Input array : [2, 3, 8] Output array : [0 0 0] Comment More info J jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-Mathematical Function Explore Python FundamentalsPython Introduction 3 min read Input and Output in Python 4 min read Python Variables 5 min read Python Operators 5 min read Python Keywords 2 min read Python Data Types 7 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 6 min read Python Functions 5 min read Recursion in Python 4 min read Python Lambda Functions 5 min read Python Data StructuresPython String 5 min read Python Lists 4 min read Python Tuples 4 min read Python Dictionary 3 min read Python Sets 6 min read Python Arrays 7 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 5 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 2 min read Python MySQL 9 min read Python Packages 12 min read Python Modules 7 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 3 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 6 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 15+ min read StatsModel Library- Tutorial 4 min read Learning Model Building in Scikit-learn 8 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 7 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 7 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 7 min read Python | Build a REST API using Flask 3 min read How to Create a basic API using Django Rest Framework ? 4 min read Python PracticePython Quiz 3 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like