如何将内容继续到Reportlabs中的下一页 - Python

Question

我正在制作一张桌子,根据收到的数据,桌子可以是小桌子还是大桌子.

虽然我提供了一个庞大的数据集,但我注意到虽然表格正在制作但我的所有内容都不存在,因为它只占用了1页.

所以,我的问题是如何在不使用的情况下将内容继续到Reportlabs中的下一页showpage(),因为我无法知道何时开始showpage或何时没有,因为内容是动态生成的？

码

def plot_table(pie_labels, pie_data, city_devices):
    styles = getSampleStyleSheet()
    styleN = styles["BodyText"]
    styleN.alignment = TA_LEFT
    styleBH = styles["Normal"]
    styleBH.alignment = TA_CENTER

    city_name = Paragraph('''<b>City Name</b>''', styleBH)
    meter_name = Paragraph('''<b>Meter Name</b>''', styleBH)
    consumption = Paragraph('''<b>Total Consumption</b>''', styleBH)

    data= [[city_name, meter_name, consumption]]
    # Texts
    for label,record,device in zip(pie_labels,pie_data,city_devices):
        label = Paragraph(label, styleN)
        record = Paragraph(str(record), styleN)
        device_list = ""
        for d in device:
            device_list += str(d) + ", "
        device = Paragraph(device_list, styleN)
        data.append([label, device, record])

    table = Table(data, colWidths=[5.05 * cm, 5.7 * cm, 3* cm ])

    table.setStyle(TableStyle([('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
                               ('BOX', (0,0), (-1,-1), 0.25, colors.black),
                              ]))
    return table


table = plot_table(pie_labels, pie_data, city_devices)
table.wrapOn(the_canvas, width, height)
table.drawOn(the_canvas, *coord(2, 59.6, cm))

Answer 1

使用table.split()：

from reportlab.lib.pagesizes import A4 # im using A4

width, height = A4
table_pieces = table.split(width, height)

for table_piece in table_pieces:
    table_piece.drawOn(the_canvas, *coordinates)
    the_canvas.show_page()
the_canvas.save()

告诉我是否有帮助:)