Expand sheet row

Input

A	B	C	D
a1	b1	c1	d1a d1b d1c
a1	b1	c1a c1b c1c	d1
a4 a4z	b1a b1b b1c b1d	c1a c1b c1c	d1a d1b d1c
a1	b1	c1	d1

Source

from openpyxl import Workbook
from openpyxl import load_workbook
from openpyxl.utils import get_column_letter
class OutputSheet:
    def __init__(self, filename):
        self.filename = filename
        self.wbc = Workbook()
    def create_title(self,title):
        self.ws1 = self.wbc.create_sheet(title=title)
    def inserir(self,row,col,data):
        self.ws1.cell(column=col,row=row,value=data)
    def save(self):
        self.wbc.save(filename=self.filename)
class SourceSheet:
    def __init__(self, filename):
        try:
            self.wbr = load_workbook(filename=filename, read_only=True)
        except FileNotFoundError as e:
            print(f"File Not Found {filename}, MSG={e}")
    def get_sheet_name(self):
        return self.wbr.sheetnames
    def expand_Col(self, rowdata, index, lenght, incomingdata=[]):
        localexpanded = []
        for column in str(rowdata[index].value).split("\n"):
            localdata = incomingdata + [column]
            if index == lenght:
                localexpanded.append(localdata)
            else:
                returneddata = self.expand_Col(rowdata, index + 1, lenght, localdata)
                if returneddata != None:
                    localexpanded = localexpanded + returneddata
        return localexpanded

    def get_sheet_data(self,sheet_name):
        try:
            sh = self.wbr[sheet_name]
            data = []
            for r in sh.rows:
                data = data + self.expand_Col(rowdata=r, index=0, lenght=len(r) - 1)
            return data
        except KeyError as e:
            print(f"Fail to read tab with kyname { sheet_name}, MSG={e}")
        except Exception as e:
            print(f"General exception, MSG=e")

if __name__ == '__main__':
    ss = SourceSheet(filename='source.xlsx')
    os = OutputSheet('output.xlsx')
    os.create_title('output')
    datas = ss.get_sheet_data('source_tab_name')
    try:
        for d in datas:
            print(d)
        drow = 0
        for row in datas:
            drow = drow + 1
            dcol = 0
            for col in row:
                dcol = dcol + 1
                os.inserir(row=drow, col=dcol, data=col)
        os.save()
    except TypeError as e:
        print(f"Fail to print row, MSG={e}")
    except Exception as e:
        print(f"General exception, MSG={e}")