Question

我使用Python 2.7（iOS Pythonista App）和reportlab 2.7模块来创建带有表格的PDF。一切正常。 RepotLab自动格式化列的宽度。但在两种情况下，我无法理解为什么reportlab会以它的方式格式化输出，以及如何获得我想要的格式。

案例1：一切几乎都是我想要的......

+-----+----------+---------------+----------+---------------------------------------------------------------------------------------------------------------+
| Day | Date     | Time          | Duration | Notes                                                                                                         |
+-----+----------+---------------+----------+---------------------------------------------------------------------------------------------------------------+
| Tue | 01.04.14 | 14:00 - 17:15 | 3.25     | Here are some notes.                                                                                          |
+-----+----------+---------------+----------+---------------------------------------------------------------------------------------------------------------+
| Wed | 02.04.14 | 18:00 - 20:15 | 2.25     | Sometime these notes are a little longer text so there must be a line break to let the whole note be visible! |
+-----+----------+---------------+----------+---------------------------------------------------------------------------------------------------------------+
| Thu | 02.04.14 | 14:00 - 17:15 | 3.25     | And sometimes these notes are only a few words.                                                               |
+-----+----------+---------------+----------+---------------------------------------------------------------------------------------------------------------+

案例2：我尝试排列浮点数

在

的帮助下

TableStyle([('ALIGN', (3,1), (3,-1), 'DECIMAL'),])

我试图将每个浮点精确地放在一条垂直线上。它可以工作，但是在“持续时间”列中，所有内容都是如此（硬）对齐，右侧是“注释”列中数字的一部分（并且“持续时间”值左侧有很多空格）。似乎正确的填充设置为点之前的点或数字，而不是整个值。

+-----+----------+---------------+-----------+-------------------------------------------------+
| Day | Date     | Time          | Duration  | Notes                                           |
+-----+----------+---------------+-----------+-------------------------------------------------+
| Tue | 01.04.14 | 14:00 - 17:15 |        3.2|5Here are some notes.                            |
+-----+----------+---------------+-----------+-------------------------------------------------+
| Wed | 02.04.14 | 14:00 - 17:15 |        3.2|5And sometimes these notes are only a few words. |
+-----+----------+---------------+-----------+-------------------------------------------------+

在

的帮助下

TableStyle([('RIGHTPADDING', (3,1), (3,-1), 18),])

我得到了更好的结果，但我认为应该有更好的方法！？

案例3：尝试打开备注文本。

当我使用段落插入注释文本时，我得到包装文本，但列宽是惊人的。我无法像实际输出那样得到以下示例。

整个桌子宽度适合文件（没有边距的DIN A4）。但似乎每列都有相同的宽度。因此，日期，日期，时间和持续时间列比它们需要的范围要宽得多，并且Notes列比它需要的要窄得多。这两件事我不能按照我的意愿出现在下面的示例表中，但我相信你的想象力;-)。

+-----+----------+---------------+----------+----------------------+
| Day | Date     | Time          | Duration | Notes                |
+-----+----------+---------------+----------+----------------------+
| Tue | 01.04.14 | 14:00 - 17:15 | 3.25     | Here are some notes. |
+-----+----------+---------------+----------+----------------------+
| Wed | 02.04.14 | 18:00 - 20:15 | 2.25     | Sometime these       |
|     |          |               |          | notes are a          |
|     |          |               |          | little longer        |
|     |          |               |          | text so there        |
|     |          |               |          | must be a line       |
|     |          |               |          | break to let         |
|     |          |               |          | the whole note       |
|     |          |               |          | be visible!          |
+-----+----------+---------------+----------+----------------------+
| Thu | 02.04.14 | 14:00 - 17:15 | 3.25     | And sometimes        |
|     |          |               |          | these notes are      |
|     |          |               |          | only a few words.    |
+-----+----------+---------------+----------+----------------------+

以下是我使用的代码：

import pipista
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.lib.pagesizes import A4
from reportlab.lib import colors
from reportlab.platypus import SimpleDocTemplate, Paragraph, Table, TableStyle

styleSheet = getSampleStyleSheet()

def makeReportData(n):
  monthreport = []
  monthreport += ('Day', '', 'Time', 'Duration', 'Notes'),
  monthreport += ('Tue', '01.04.14', '14:00 - 17:15', '3.25', n[0]),
  monthreport += ('Wed', '02.04.14', '14:00 - 17:15', '3.25', n[1]),
  monthreport += ('Thu', '03.04.14', '14:00 - 17:15', '3.25', n[2]),
  return monthreport

notes = ['Here are some notes.',
         'Sometime these notes are a little longer text so there must be a line break to let the whole note be visible!',
         'And sometimes these notes are only a few words.']

paranote = []
for note in notes:
  paranote += (Paragraph(note, styleSheet["BodyText"]),)

tstyle = [('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
          ('BOX', (0,0), (-1,-1), 0.25, colors.black),]

case1 = []
t = Table(makeReportData(notes))
t.setStyle(TableStyle(tstyle))
case1.append(t)
doc = SimpleDocTemplate('Table normal.pdf', pagesize = A4)
doc.build(case1)

case2 = []
tstyledez = tstyle + [('ALIGN', (3,1), (3,-1), 'DECIMAL'),]
t.setStyle(TableStyle(tstyledez))
case2.append(t)
doc = SimpleDocTemplate('Table align decimal.pdf', pagesize = A4)
doc.build(case2)

case3 = []
t = Table(makeReportData(paranote))
tstylepara = tstyle + [('VALIGN',(0,1),(3,-1),'TOP'),]
t.setStyle(TableStyle(tstylepara))
case3.append(t)
doc = SimpleDocTemplate('Table Paragraph.pdf', pagesize = A4)
doc.build(case3)

我希望有人能把我推向正确的方向。

Answer 1

好的，RTM总是个好主意！来自ReportLab文档：

如果单元格值是Flowable或Flowable列表，则这些必须具有确定的宽度，或者包含列必须具有固定的宽度。

解决方案：

from reportlab.lib.units import mm

t = Table(makeReportData(paranote), colWidths=(None, None, None, None, 100*mm))

我想也许DECIMAL对齐（案例2）的问题可能以同样的方式解决，但是不起作用。

Python＆amp; ReportLab：PDF表格中的列宽和对齐方式错误

1 个答案: