Python Reportlab 自动换行表

Question

我有一个用 python 生成的列表，为了有一个漂亮的布局，我需要在其中自动换行。由于是列表中的列表，我无法使用 Paragraphe () （或者也许有人知道如何使用 - 我无法编写功能代码）

我在这个页面上发现了一个代码，它不会进行自动换行，尽管它是这么说的。

所以这里的问题是： 我如何对 mycells 中的文本进行自动换行，以便表格适合页面并且可以看到所有文本？

这是我的代码（简而言之）：

from reportlab.lib.pagesizes import A4
from reportlab.lib.pagesizes import letter, cm
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus import LongTable, TableStyle, BaseDocTemplate, Frame, PageTemplate
from reportlab.lib import colors
from reportlab.platypus import Paragraph, Table, TableStyle
########################################################################

def test():
    doc = BaseDocTemplate(
        "question.pdf",
        pagesize=A4,
        rightMargin=72,
        leftMargin=72,
        topMargin=50,
        bottomMargin=80,
        showBoundary=False)

elements = []
data = [['A', 'B', 'C', 'dddddddddddd', 'D'],
        ['00', '0dddddddddddddddddddddddddddddddddddd1', '02', 'fff', '04'],
        ['10', '11', '12', 'dfg', '14'],
        ['20', '21', '22', 'ddddddddddddddddddddddddddddddddddddddddddddddddddddddd23', '24'],
        ]

t = LongTable(data)

tableStyle = [
    ('INNERGRID', (0, 0), (-1, -1), 0.25, colors.black),
    ('BOX', (0, 0), (-1, -1), 0.25, colors.black),
]
t.setStyle(TableStyle(tableStyle))
elements.append(t)

styles = getSampleStyleSheet()
styleN = styles['Normal']


frame = Frame(doc.leftMargin, doc.bottomMargin, doc.width, doc.height - 2 * cm, id='normal')
template = PageTemplate(id='longtable', frames=frame)
doc.addPageTemplates([template])


doc.build(elements)


if __name__ == '__main__':
    test()`

Answer 1

我修改并稍微重新安排了您的示例，以便它再次执行正确的操作，实际上引用的页面正在执行它所承诺的操作，但缺少您必须传递 colWidth 参数，我希望您可以从这里继续：

from reportlab.lib.pagesizes import A4
from reportlab.lib.pagesizes import letter, cm
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus import LongTable, TableStyle, BaseDocTemplate,Frame, PageTemplate
from reportlab.lib import colors
from reportlab.platypus import Paragraph, Table, TableStyle

def reprFrame(frame):
    _dict = vars(frame)
    for key in sorted(list(_dict.keys())):
        print(key, ": ", _dict[key])

def test():
    doc = BaseDocTemplate(
        "question.pdf",
        pagesize=A4,
        rightMargin=72,
        leftMargin=72,
        topMargin=50,
        bottomMargin=80,
        showBoundary=False)

    elements = []
    data = [['A', 'B', 'C', 'dddddddddddd', 'D'],
        ['00', '0dddddddddddddddddddddddddddddddddddd1', '02', 'fff', '04'],
        ['10', '11', '12', 'dfg', '14'],
        ['20', '21', '22', 'ddddddddddddddddddddddddddddddddddddddddddddddddddddddd23', '24'],
        ]



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


    styles = getSampleStyleSheet()
    styleN = styles['Normal']

    styleN.wordWrap = 'CJK'

    data2 = [[Paragraph(cell, styleN) for cell in row] for row in data]

    frame = Frame(doc.leftMargin, doc.bottomMargin, doc.width, doc.height - 2 * cm, id='normal')

    reprFrame(frame)

    colwidths = [frame._width/5. for i in range(5)]

    t = LongTable(data2, colWidths=colwidths)
    t.setStyle(TableStyle(tableStyle))
    elements.append(t)

    template = PageTemplate(id='longtable', frames=frame)
    doc.addPageTemplates([template])
    doc.build(elements)


if __name__ == '__main__':
    test()