Python openpyxl 将列表写入 Excel 报错

Question

我是 Python 的新手，正在从事我的第一个项目。我试图让我的代码从一个电子表格中复制数据列并将其附加到当前存在于主表中的数据。我能够捕获每张工作表中的数据并创建一个结合了两个数据集的新主列表，但我无法将其写入文件。当我测试打印组合列表时，它们看起来是正确的，但是当我添加代码以将列表写入文件时，它被挂断了。

您能提供的任何帮助都将非常有帮助!

下面是我的代码。这是我遇到的错误

Traceback (most recent call last): File "/Path/Path/Path/extractData.py", line 50, in destSheet.cell(row=rowNum, column=1).value = masterList1

File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/openpyxl/cell/cell.py", line 313, in value self._bind_value(value)

File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/openpyxl/cell/cell.py", line 217, in _bind_value raise ValueError("Cannot convert {0} to Excel".format(value))

ValueError: Cannot convert ['Reinsurer', 'Market 1', 'Market 2', 'Market 3', 'Market 4', 'Market 5', 'Market 1', 'Market 2', 'Market 3', 'Market 4', 'Market 5', ['Market 1', 'Market 2', 'Market 3', 'Market 4', 'Market 5']] to Excel

import openpyxl

#Open source data file
sourceFile = openpyxl.load_workbook('/Path/Path/Path/testAuth.xlsx')
sourceSheet = sourceFile.get_sheet_by_name('Sheet1')

#read data from source file and create lists of new data
newList1 = []
newList2 = []
newList3 = []

for row in range(2, sourceSheet.get_highest_row()):
    data1 = sourceSheet['A' + str(row)].value
    newList1.append(data1)
    data2 = sourceSheet['B' + str(row)].value
    newList2.append(data2)
    data3 = sourceSheet['C' + str(row)].value
    newList3.append(data3)

#open destination workbook that includes the master database
destFile = openpyxl.load_workbook('/Path/Path/Path/testHist.xlsx')
destSheet = destFile.get_sheet_by_name('Sheet1')

#create empty lists for copying the historical data already in the workbook
masterList1 = []
masterList2 = []
masterList3 = []

#grab master spreadsheet data and write to list
for row in range(1, destSheet.get_highest_row()+1):
    masterData1 = destSheet['A'+ str(row)].value
    masterList1.append(masterData1)
    masterData2 = destSheet['B'+ str(row)].value
    masterList2.append(masterData2)
    masterData3 = destSheet['C'+ str(row)].value
    masterList3.append(masterData3)

#append new data to the history list
masterList1.append(newList1)
masterList2.append(newList2)
masterList3.append(newList3)

#write new master list to a new file
for rowNum in range(2, len(masterList1)):
    destSheet.cell(row=rowNum, column=1).value = masterList1

destSheet.save("updatedTest.xlsx")

Answer 1

不是将每个单元格的值分配给 masterList1，您可能打算使用 masterList1[rowNum] 作为值:

for rowNum in range(2, len(masterList1)):
    destSheet.cell(row=rowNum, column=1).value = masterList1[rowNum]

另外，正如@mgrant 指出的那样，您之前应该扩展(而不是附加)主列表:

masterList1.extend(newList1)