分页符后出现Reportlab错误

我正在设计一个双面打印双面打印。之后，我添加分页符，我得到以下错误：分页符后出现Reportlab错误

File "f:\Dropbox\pms\pms_reports.py", line 450, in <module> 
    a = Key_card1() 
File "f:\Dropbox\pms\pms_reports.py", line 441, in __init__ 
    doc.build(elements) 
File "c:\Python34\Lib\site-packages\reportlab\platypus\doctemplate.py", line 1171, in build 
    BaseDocTemplate.build(self,flowables, canvasmaker=canvasmaker) 
File "c:\Python34\Lib\site-packages\reportlab\platypus\doctemplate.py", line 927, in build 
    self.handle_flowable(flowables) 
File "c:\Python34\Lib\site-packages\reportlab\platypus\doctemplate.py", line 775, in handle_flowable 
    self.handle_keepWithNext(flowables) 
File "c:\Python34\Lib\site-packages\reportlab\platypus\doctemplate.py", line 742, in handle_keepWithNext 
    while i<n and flowables[i].getKeepWithNext(): i += 1 

builtins.TypeError: getKeepWithNext() missing 1 required positional argument: 'self'

这里是我的代码：

from reportlab.lib.pagesizes import A4, landscape 
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle, Paragraph, PageBreak 
from reportlab.lib.styles import getSampleStyleSheet 

    class Key_card1(): 
    def __init__(self, start_date=datetime.now(), room="1", 
      end_date=datetime.now()+timedelta(days=1), password = "999999"): 
     stylesheet = getSampleStyleSheet() 
     doc = SimpleDocTemplate("key_card.pdf", pagesize=A4) 

     if password == "999999": 
      password = str(random.randint(10000,99999)) 

     roomno = "Room" + room 
     w_text = [] 
     w_text.append(Paragraph("To use the wireless broadband…:",stylesheet["BodyText"])) 
     w_text.append(Paragraph("User id: <b>" + roomno + "</b>", stylesheet["BodyText"])) 
     w_text.append(Paragraph("Password: <b>" + password + "</b>", stylesheet["BodyText"])) 

     message_text = [] 
     message_text.append(Paragraph("Our current menus ...", stylesheet["BodyText"])) 
     message_text.append(Paragraph("Our restaurant can get very busy ...",stylesheet["BodyText"])) 
     message_text.append(Paragraph("Your shower has a safety device to...", stylesheet["BodyText"])) 
     message_text .append(Paragraph("Please do not hesitate to call...",stylesheet["BodyText"])) 


     elements=[] 
     table_data = [(w_text, message_text)] 
     the_table = Table(table_data) 
     the_table.setStyle(TableStyle([('VALIGN',(0,0),(-1,-1),'MIDDLE')])) 
     elements.append(the_table) 
     elements.append(PageBreak) 

     #Cover page 
     logo= "y:\marketing\priory_master_logo bw.jpg" 
     im = Image(logo, 3*cm, 1.258*cm) 

     cover_data = [] 
     cover_data.append(im) 
     cover_data.append(Paragraph("Room number : " + room, stylesheet["BodyText"])) 
     left_cell =[] 
     left_cell.append(Paragraph(" ", stylesheet["BodyText"])) 


     table_data1 = [(left_cell, cover_data)] 
     the_table1 = Table(table_data1) 
     the_table1.setStyle(TableStyle([('VALIGN',(0,0),(-1,-1),'MIDDLE')])) 
     elements.append(the_table1) 


     doc.build(elements)

我试图修改ReportLab的模块，但我没有成功。任何人有任何想法？

来源

2016-09-17 Dkellygb

我试图理解错误，我猜这里有问题 doc = SimpleDocTemplate("key_card.pdf", pagesize=A4)。问题可能是参数“key_card.pdf”。我不知道

编辑：也许，BaseDocTemplate.build(self,flowables, canvasmaker=canvasmaker)问题是关于它连接到doc.build元素（元素）

解决方案“悬浮剂”的说法 - > elements.append（分页符）应该是元素。附加（PageBreak（））

来源

2016-09-17 13:59:02

我转换了代码创建一个pageTemplate和框架和使用BaseDocTemplate并得到完全相同的错误。当我将分页符注释掉时，它全部打印出来没有错误（除非没有分页符）。 – Dkellygb

我想我发现它'elements.append（PageBreak）'应该是'elements.append（PageBreak（））'。我谷歌搜索“缺少1所需的位置参数：'自我'”，并发现这些[链接]（http://stackoverflow.com/questions/17534345/typeerror-missing-1-required-positional-argument-self）[链接]（ http://stackoverflow.com/questions/37289391/missing-1-required-positional-argumentself-when-assigning-a-method-to-a-varia）你应该注意类初始化;） –

你是绝对正确的。我不知道为什么我没有看到它。如果你让你的评论成为答案，我会接受它。 - 谢谢！ – Dkellygb

分页符后出现Reportlab错误

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