numpy.chararray.replace
method
- 
chararray.replace(self, old, new, count=None)[source] - 
For each element in
self, return a copy of the string with all occurrences of substringoldreplaced bynew.See also
 
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Licensed under the 3-clause BSD License.
    https://numpy.org/doc/1.19/reference/generated/numpy.chararray.replace.html