Numpy recarray.conj() function | Python Last Updated : 27 Sep, 2019 Comments Improve Suggest changes Like Article Like Report In numpy, arrays may have a data-types containing fields, analogous to columns in a spreadsheet. An example is [(a, int), (b, float)], where each entry in the array is a pair of (int, float). Normally, these attributes are accessed using dictionary lookups such as arr['a'] and arr['b']. Record arrays allow the fields to be accessed as members of the array, using arr.a and arr.b. numpy.recarray.conj() function return an array by conjugating the complex number in the array. Syntax : numpy.recarray.conj(out=None) Parameters: 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. Return : Output array with same dimensions as Input array, placed with result. Code #1 : Python3 # Python program explaining # numpy.recarray.conj() method # importing numpy as geek import numpy as geek # creating input array in_arr = geek.array([[(5.0 + 2j, 2 + 1j), (3.0, -4 + 6j), (6.0-5j, 9)], [(9.0, 1), (5.0 + 1j, 4-1j), (-12.0 + 6j, -7 + 3j)]], dtype =[('a', complex), ('b', complex)]) print ("Input array : ", in_arr) # convert it to a record array, using arr.view(np.recarray) rec_arr = in_arr.view(geek.recarray) # 1st record array print("1st Record array of complex : ", rec_arr.a) # applying recarray.conj methods to 1st record array out_arr = (rec_arr.a).conj() print ("Output 1st conjugated array : ", out_arr) # 2nd record array rec_arr = rec_arr.b print("2nd Record array of complex : ", rec_arr) # applying recarray.conj methods to 2nd record array out_arr = rec_arr.conj() print ("Output 2nd conjugated array : ", out_arr) Output: Input array : [[( 5.+2.j, 2.+1.j) ( 3.+0.j, -4.+6.j) ( 6.-5.j, 9.+0.j)] [( 9.+0.j, 1.+0.j) ( 5.+1.j, 4.-1.j) (-12.+6.j, -7.+3.j)]] 1st Record array of complex : [[ 5.+2.j 3.+0.j 6.-5.j] [ 9.+0.j 5.+1.j -12.+6.j]] Output 1st conjugated array : [[ 5.-2.j 3.-0.j 6.+5.j] [ 9.-0.j 5.-1.j -12.-6.j]] 2nd Record array of complex : [[ 2.+1.j -4.+6.j 9.+0.j] [ 1.+0.j 4.-1.j -7.+3.j]] Output 2nd conjugated array : [[ 2.-1.j -4.-6.j 9.-0.j] [ 1.-0.j 4.+1.j -7.-3.j]] Comment More info J jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-arrayManipulation 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