Method slice

pattern/db/__init__.py:1855–1858

Returns a new Datasheet starting at row i and column j and spanning n rows and m columns.

(self, i, j, n, m)

                row[j] = function(item)

    def slice(self, i, j, n, m):
        """ Returns a new Datasheet starting at row i and column j and spanning n rows and m columns.
        """
        return Datasheet(rows=[list.__getitem__(self, i)[j:j+m] for i in range(i, i+n)])

    def copy(self, rows=ALL, columns=ALL):
        """ Returns a new Datasheet from a selective list of row and/or column indices.