numpy string operations | zfill() function
numpy.core.defchararray.zfill(arr, width) is another function for doing string operations in numpy. For each element in the array it returns the numeric string left-filled with zeros.The number of left filled zeros happen according to the width.
Parameters:
arr : array_like of str or unicode.Input array.
width : [int] The final width of the string after filling zeros.Returns : [ndarray] Output array of str or unicode, depending on input type.
Code #1 :
# Python program explaining # numpy.char.zfill() method # importing numpy import numpy as geek # input array in_arr = geek.array(['Geeks', 'for', 'Geeks']) print ("Input array : ", in_arr) # setting the width of each string to 8 width = 8 # output array out_arr = geek.char.zfill(in_arr, width) print ("Output array: ", out_arr) |
Output:
Input array : ['Geeks' 'for' 'Geeks'] Output array: ['000Geeks' '00000for' '000Geeks']
Code #2 :
# Python program explaining # numpy.char.zfill() method # importing numpy import numpy as geek # input array in_arr = geek.array(['1', '11', '111']) print ("Input array : ", in_arr) # setting the width of each string to 5 width = 5 # output array out_arr = geek.char.zfill(in_arr, width) print ("Output array: ", out_arr) |
Output:
Input array : ['1' '11' '111'] Output array: ['00001' '00011' '00111']
