关于python：reportlab行间距和表中段落的拟合

reportlab line spacing and fitting of a Paragraph in a table

我在python 2.7中使用reportlab 3.1.44
这是在表中使用段落的代码。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.rl_config import defaultPageSize
from reportlab.lib.units import inch
from reportlab.lib.styles import ParagraphStyle
from reportlab.platypus.tables import Table, TableStyle
from reportlab.lib import colors
from reportlab.lib.colors import Color

styles = getSampleStyleSheet()

def make_report():
doc = SimpleDocTemplate("hello.pdf")
story = []
style = styles["Normal"]
ps = ParagraphStyle('title', fontSize=20)

p1 ="here is some paragraph to see in large font"
data = []
table_row = [Paragraph(p1, ps),\
Paragraph(p1, ps)\
]

data.append(table_row)
t1 = Table(data)
t1.setStyle(TableStyle([\
('GRID', (0,0), (-1,-1), 0.25, colors.red, None, (2,2,1)),\
]))
story.append(t1)

doc.build(story)

if __name__ =="__main__":
make_report()

字体较大时有两个问题。

文本比单元格大，因此超出了边界
行之间的间距太小

我该如何解决这个问题？

这两个问题实际上是由同一问题引起的，即Paragraph的高度。表格单元格由确定行高的行距同时缺少空格也是由换行引起的。

在Reportlab中，根据文档使用leading样式属性设置行距。

Interline spacing (Leading)

The vertical offset between the point at which one line starts and where the next starts is called the leading offset.

因此，正确的代码版本将使用：

1	ps = ParagraphStyle('title', fontSize=20, leading=24)

结果是：
Example of the output after correction