# numpy string operations | lower() function in Python # Python Program explaining# numpy.char.lower() 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.lower(in_arr)print ("output lowercased array :", out_arr)