用于报告的 xlsxwriter 和 pandas

Question

我正在尝试创建一个基本的 Excel 报告。

我正在尝试显示数据框以及一些自定义文本/标题，而不是数据框的一部分。

但是，我只能选择其中之一。我不太明白数据框出现所需的代码结尾（workbook = writer.book 和 worksheet = writer.sheets['Reports']。

这是我的代码：

writer = pd.ExcelWriter('reportTemplate.xlsx', engine='xlsxwriter')

workbook = xlsxwriter.Workbook('reportTemplate.xlsx')
worksheet = workbook.add_worksheet('Reports')

# REPORT TITLE
worksheet.write('D2','Daily In-Store Report')

workbook = xlsxwriter.Workbook('reportTemplate.xlsx')
worksheet = workbook.add_worksheet('Reports')
worksheet.write('D2','Daily In-Store Report')

reportTimes = ['Day','Week','Period','Quarter','Year']
cityList = ['ontario','bayshore','ottawa','limeridge','oshawa','scarborough','sherway','massonville','gatineau',
            'quebec','anjou','dix30','Fairview','laval','mtltrust','stbruno','gcapitale','stefoy','rivieres','chicoutimi','sherbrooke','canada']

# LOOP THROUGH FILES
rowNb = 4
for time in reportTimes:
    # TITLE
    tableTitle = time + ' report as of ...'
    worksheet.write('A'+str(rowNb),tableTitle)
    rowNb += 1

    headRow, secondHead = createHeadings(time)
    worksheet.write_row('B' + str(rowNb), headRow)  
    worksheet.write_row('B' + str(rowNb), secondHead)
    rowNb += 2

    df = pd.read_csv('fy_' + time.lower() + '.csv')
    df.set_index('legacy_id',inplace=True)
    df = df.reindex(cityList)
    print(df)

    df.to_excel(writer,sheet_name='Reports',startrow = rowNb,header=False)

    workbook  = writer.book
    worksheet = writer.sheets['Reports']

    writer.save()

因为现在的代码，它只显示数据框

Answer 1

我不清楚您是否要在一个 Excel 文件中写入多张工作表。如果是这样，问题可能是您正在重写同一张名为“报告”的工作表四次。此外，这里有一些基本的尝试。将df.to_excel() 放在pd.ExcelWriter() 之后。然后从for 循环中删除最后四行。最后，在for 循环结束后放置writer.save()。 （当我第一次学习它们时，这对我来说也不是很清楚。在this link查看更多示例。）

编辑：这里是完全执行的代码（带有存根数据）。其中一个关键是使用writer.sheets['Reports'] = worksheet 启用对工作表的多次写入 - 请参阅this explanation。

dummy_df = pd.DataFrame([[10,np.NaN],[12,42],[16,np.NaN],[20,3],[25,16],[30,1],[40,19],[60,99]],columns=['legacy_id', 'b'])
writer = pd.ExcelWriter('reportTemplate.xlsx', engine='xlsxwriter')
workbook = writer.book
worksheet = workbook.add_worksheet('Reports')
writer.sheets['Reports'] = worksheet # enable multiple writes to sheet

# REPORT TITLE
worksheet.write('D2','Daily In-Store Report')

reportTimes = ['Day','Week','Period','Quarter','Year']
cityList = ['ontario','bayshore','ottawa','limeridge','oshawa','scarborough','sherway','massonville','gatineau',
            'quebec','anjou','dix30','Fairview','laval','mtltrust','stbruno','gcapitale','stefoy','rivieres','chicoutimi','sherbrooke','canada']

# LOOP THROUGH FILES
rowNb = 4
for time in reportTimes:
    # TITLE
    tableTitle = time + ' report as of ...'
    worksheet.write('A'+str(rowNb),tableTitle)
    rowNb += 1

    headRow, secondHead = "dummy head row", "dummy second head" #I don't have your createHeadings(time)
    worksheet.write_row('B' + str(rowNb), headRow)  
    worksheet.write_row('B' + str(rowNb), secondHead)
    rowNb += 2

    df = dummy_df.copy(deep=True) # pd.read_csv('fy_' + time.lower() + '.csv')
    df.set_index('legacy_id',inplace=True)
    df = df.reindex(cityList)
    #print(df)
    df.to_excel(writer,sheet_name='Reports', startrow = rowNb)
    rowNb += df.shape[0] #gives row count

writer.save()