numpy.core.defchararray.join (sep, arr) — another function to do string operations in numpy. For each element in arr, it returns a copy of the string where the string elements of the array were concatenated by the separator.
sep: strong > 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: [` Python` `N + u + m + p + y,, P * a * n * d * a * s`]