使用 openpyxl 将数据附加到新的 Excel 工作表中

Question

I have bunch of excel workbooks and I would like to get cell values from them and write to a new sheet.

My code is not appending new data.It is just overwriting cells with values from last workbook.

(I've changed the pasted code.It was pasted incorrect.)

Here is my code

from openpyxl import load_workbook

booklist = ["17_02.xlsx", "17_03.xlsx",
        "17_04.xlsx", "17_05.xlsx",
        "17_06.xlsx", "17_08.xlsx",
        "17_09.xlsx", "17_10.xlsx"]


for wb in booklist:
    book = load_workbook(filename =wb,data_only=True)
    report = load_workbook(filename="dest.xlsx", data_only=True)
    print(book)
    sheet = book['Sheet']
    reportsheet=report['First']
    row_count=sheet.max_row
    column_count=sheet.max_column
    for r in range(1,row_count+1):
        for c in range(1,column_count+1):
           source=sheet.cell(row=r, column=c)
           dest = reportsheet.cell(row=r, column=c)
           dest.value = source.value
           sheet.title = 'First'
           book.save("dest.xlsx")

Edit:

After the mickNeill's answer I changed the code and it worked for appending.But now there is another problem. If I run the code (after clearing the cells) second time or more it's appending the data to the rows after the cleared cells.

First run: Data appended to A1:A20 Clear the cells,save and close the workbook.

Second run: Data appended to A21:A20 instead of A1:A20 (cleared cells)

Every time I run the code value of the reportRow continues to increase (1,20,40 ...) and appending data to higher number of rows.

from openpyxl import load_workbook


booklist = ["17_02.xlsx", "17_03.xlsx",
    "17_04.xlsx", "17_05.xlsx",
    "17_06.xlsx", "17_08.xlsx",
    "17_09.xlsx", "17_10.xlsx"]


for wb in booklist:
    book = load_workbook(filename =wb,data_only=True)
    report = load_workbook(filename="dest.xlsx", data_only=True)
    print(book)
    sheet = book['Sheet']
    reportsheet=report['First']
    row_count=sheet.max_row
    reportRow = reportsheet.max_row
    column_count=sheet.max_column
    for r in range(1,row_count+2):
        for c in range(1,column_count+1):
            source=sheet.cell(row=r, column=c)
            dest = reportsheet.cell(row=reportRow, column=c)
            dest.value = source.value
        reportRow += 1
    report.save("dest.xlsx")

Answer 1

Try this: Editied, you are saving the wrong book, last line

from openpyxl import load_workbook

booklist = ["Book5.xlsx", "Book6.xlsx","Book7.xlsx"]

report = load_workbook(filename="dest.xlsx", data_only=True)
for wb in booklist:
    book = load_workbook(filename =wb,data_only=True)

    #print(book)
    sheet = book['Sheet1']
    reportsheet=report['First']
    row_count=sheet.max_row
    reportRow = reportsheet.max_row + 1
    print reportRow
    column_count=sheet.max_column
    for r in range(1,row_count+1):
        for c in range(1,column_count+1):
            print reportRow
            source=sheet.cell(row=r, column=c)
            dest = reportsheet.cell(row=reportRow, column=c)
            dest.value = source.value
            sheet.title = 'First' 
        reportRow += 1
report.save("dest.xlsx")