numpy string operations | swapcase() function Last Updated : 28 Nov, 2022 Comments Improve Suggest changes Like Article Like Report numpy.core.defchararray.swapcase(arr) function return element-wise a copy of the string with uppercase characters converted to lowercase and lowercase characters converted to uppercase. Syntax: numpy.char.swapcase(arr) Parameters: arr : [ array_like ] Input array which may be str or unicode. Returns : [ndarray] Output lowercased array of str or unicode, depending on input type. Code #1: Python3 # Python Program explaining # numpy.char.swapcase() function import numpy as geek in_arr = geek.array(['P4Q R', '4q Rp', 'Q Rp4', 'rp4q']) print ("input array : ", in_arr) out_arr = geek.char.swapcase(in_arr) print ("output swapcased array :", out_arr) Output:input array : ['P4Q R' '4q Rp' 'Q Rp4' 'rp4q'] output swapcasecased array : ['p4q r' '4Q rP' 'q rP4' 'RP4Q'] Code #2: Python3 # Python Program explaining # numpy.char.swapcase() function import numpy as geek in_arr = geek.array(['Geeks', 'For', 'Geeks']) print ("input array : ", in_arr) out_arr = geek.char.swapcase(in_arr) print ("output swapcasecased array :", out_arr ) Output:input array : ['Geeks' 'For' 'Geeks'] output swapcasecased array : ['gEEKS' 'fOR' 'gEEKS'] Comment More infoAdvertise with us Next Article numpy string operations | swapcase() function J jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-String Operation Practice Tags : python Similar Reads numpy string operations | upper() function numpy.core.defchararray.upper(arr): function is used to return an array with the elements converted to uppercase. Parameters: arr : [ array_like ] Input array which may be str or unicode. Returns : [ndarray] Output uppercased array of str or unicode, depending on input type. Code #1: Python3 # Pytho 1 min read numpy string operations | title() function numpy.core.defchararray.title(arr): function is used to Return element-wise title cased version of string or unicode.Title case words start with uppercase characters, all remaining cased characters are lowercase. Parameters: arr : [ array_like ] Input array which may be str or unicode. Returns : [nd 1 min read Numpy - String Functions & Operations NumPy String functions belong to the numpy.char module and are designed to perform element-wise operations on arrays. These functions can help to handle and manipulate string data efficiently.Table of ContentString OperationsString Information String Comparison In this article, we’ll explore the var 5 min read numpy string operations | lower() function numpy.core.defchararray.lower(arr) function is used to return an array with the elements converted to lowercase. Parameters: arr : [ array_like ] Input array which may be str or unicode. Returns : [ndarray] Output lowercased array of str or unicode, depending on input type. Code #1: Python3 # Python 1 min read numpy string operations | isupper() function numpy.core.defchararray.isupper(arr) function returns True for each element if all cased characters in the string are uppercase and there is at least one character, it returns false otherwise. Parameters: arr : array_like of str or unicode Returns : [ndarray] Output array of bools. Code #1: Python3 1 min read Like