numpy.core.defchararray.join(sep, arr) is another function for doing string operations in numpy. For each element in arr, it returns a copy of the string in which the string elements of array have been joined by separator.
sep : It joins elements with the string between them.
arr :Input array.
Returns : Output array of str or unicode with joined elements.
Code #1 :
Input original array : ['Python' 'Numpy' 'Pandas'] Output joined array: ['P-y-t-h-o-n' 'N+u+m+p+y' 'P*a*n*d*a*s']
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