ReportLab:LayoutError当单元格内容对于pag太长时

Question

我正在尝试创建一个包含7个col的表。最后一列包含一个很长的文本，它似乎创建了错误。似乎当单元格超过页面大小时，它会抛出一个异常。在

from reportlab.lib.pagesizes import landscape, A4
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus import SimpleDocTemplate, LongTable, TableStyle, Paragraph
from reportlab.lib import colors
from reportlab.lib.units import mm
from datetime import date

doc = SimpleDocTemplate(response, pagesize=A4, rightMargin=30,leftMargin=30, topMargin=30,bottomMargin=18)
doc.pagesize = landscape(A4)
elements = []

styles = getSampleStyleSheet()
cell_style = styles['BodyText']
cell_style.wordWrap = 1
cell_style.fontName = 'Courier'
cell_style.spaceBefore = 30
cell_style.spaceAfter = 30

title_style = styles['Title']
title_style.fontName = 'Courier'
title = Paragraph('Export Issue Tracker (%s)' % (date.today().isoformat()), title_style)
elements.append(title)

data2 = [[Paragraph(cell, cell_style) for cell in row] for row in data]
table = LongTable(data2, colWidths=(None, None, None, None, None, None, 50*mm))
table_style = TableStyle([('BOX', (0,0), (-1,-1), 0.25, colors.black),
                            ('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
                            ('FONTNAME',(0,0),(-1,-1),'Courier'),
                            ('VALIGN',(0,0),(-1,-1),'TOP'),
                            ('ALIGN',(0,0),(-1,0),'CENTER'),
                            ('TEXTCOLOR',(0,0),(-1,0), colors.yellow),
                            ('BACKGROUND', (0,0), (-1,0), colors.gray),
                            ('FONTSIZE',(0,0),(-1,-1),50)] + color_style)
table.setStyle(table_style)
elements.append(table)

doc.build(elements)

但是我得到了以下错误：

^{pr2}$

我看过很多关于如何使用KeepTogether，Spacer，LongTable的帖子，但是没有一个适合我。在