ReportLab

Sep 24, 2015

简介

ReportLab 官网 的强大之处在于能满足绝大部分报表的需求形式，可以在点这里 下载。

  • 要求 Python 版本为 2.7 or >=3.3
  • 直接使用 API 是最麻烦、最基础的做法
  • 支持 RML 和 HTML

安装

pip 安装

sudo pip install reportlab

源码安装

下载

wget https://pypi.python.org/packages/source/r/reportlab/reportlab-3.2.0.tar.gz#md5=79d059e797c557aed4b40c68dd6c7eae

解压

tar zxvf reportlab-3.2.0.tar.gz
cd reportlab-3.2.0

安装

#Ubuntu
sudo python setup.py install

#CentOS
su root
python setup.py install

测试

python
import reportlab

使用

canvas

画布用法可从 API 的 Chapter 2 学习，示例代码如下：

#!/usr/bin/python
# -*- coding: utf-8 -*-
# python version 2.7.6

from reportlab.pdfgen import canvas 
from reportlab.lib import fonts,colors
from reportlab.lib.units import inch
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle
from reportlab.lib.pagesizes import A4, cm
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.lib.enums import TA_JUSTIFY, TA_LEFT, TA_CENTER
from reportlab.platypus import Paragraph, Table, TableStyle
import Image

def hello(): 
	#指定pdf目录和文件名 
	c = canvas.Canvas("/home/lin/World.pdf", pagesize=A4)  

	#Logo和标题
	im = Image.open('/home/lin/work/png/portrait.png')
	c.drawInlineImage( im, 230,800, width=19,height=22)
	c.drawString(255,807,"NIPT") 

	c.drawString(75,707,"There is a table") 

	width, height = A4
	styles = getSampleStyleSheet()
	styleN = styles["BodyText"]
	styleN.alignment = TA_LEFT
	styleBH = styles["Normal"]
	styleBH.alignment = TA_CENTER


	# Headers
	hid = Paragraph('<b>ID</b>', styleBH)
	hname = Paragraph('<b>Name</b>', styleBH)
	hprice = Paragraph('<b>Price</b>', styleBH)

	# Texts
	tid = Paragraph('1', styleN)
	tname = Paragraph('cherry', styleN)
	tprice = Paragraph('$52.00', styleN)

	data= [[hid, hname, hprice],[tid, tname, tprice]]

	table = Table(data, colWidths=[5 * cm, 5 * cm, 5 * cm])

	table.setStyle(TableStyle([
		               ('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
		               ('BOX', (0,0), (-1,-1), 0.25, colors.black),
		               ]))

	table.wrapOn(c, width, height)
	table.drawOn(c, 75, 650)

	# 画圆 canvas.circle(x_cen, y_cen, r, stroke=1, fill=0)
	c.circle(100, 100, 100, stroke=1, fill=0)
	# 画线 canvas.line(x1,y1,x2,y2)
	c.line(100,200,30,50)

	c.showPage() 
	c.save() 

if __name__=='__main__':
	hello()

SimpleDocTemplate

SimpleDocTemplate 用法可从 API 的 5.6 Documents and Templates 学习，示例代码如下：

#!/usr/bin/python
# -*- coding: utf-8 -*-
# python version 2.7.6

__des__ = 'NIPT create pdf'
__author__ = 'lin'

import os
from reportlab.lib import colors
from reportlab.lib.enums import TA_LEFT
from reportlab.lib.pagesizes import A4,cm
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.platypus import Image,Paragraph,SimpleDocTemplate,Spacer,Table,TableStyle
from tableutil import *

pdfmetrics.registerFont(TTFont('hei', 'ttc/simhei.ttf'))

# create pdf
def createPDF(path):
	if(not path.endswith(os.sep)):
		path = path+os.sep
	datakey = str(os.path.split(path[:-1])[1])
	rdir = os.path.join(path,"Result")
	doc = SimpleDocTemplate(os.path.join(path,datakey+".pdf"),
		pagesize=A4,rightMargin=10,
		leftMargin=10,topMargin=10,bottomMargin=10)
	# define style
	styles = getSampleStyleSheet()
	# title style
	styleTitle = styles["Normal"]
	styleTitle.alignment = TA_LEFT
	styleTitle.leftIndent = 55
	# context style
	styleContext = styles["BodyText"]
	styleContext.alignment = TA_LEFT

	# total context
	tatal = []

	# logo and pdf title
	im = Image("/home/lin/work/png/portrait.png", 15, 17)
	pdftitle = '<font size=14 name="hei">NIPT 报告</font>'
	data= [[im, Paragraph(pdftitle, styleContext)]]
	table = Table(data, colWidths=[0.9 * cm, 3.5 * cm])
	table.setStyle(TableStyle([('VALIGN',(-1,-1),(-1,-1),'TOP')]))
	tatal.append(table)
	tatal.append(Spacer(1, 12))

	# first table
	t1 = '<font size=10 name="hei">数据统计：</font>'
	tatal.append(Paragraph(t1, styleTitle))
	tatal.append(Spacer(1, 12))
	firstData = simpleTable(os.path.join(rdir,"Data_report.txt"),styleContext,styleContext)
	table = Table(firstData,colWidths=[4.0 * cm, 4.0 * cm, 2.0 * cm, 4.0 * cm, 2.0 * cm])
	table.setStyle(TableStyle([
	               ('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
	               ('BOX', (0,0), (-1,-1), 0.25, colors.black),
	               ]))
	tatal.append(table)
	tatal.append(Spacer(1, 12))

	# second table
	t2 = '<font size=10 name="hei">报告：</font>'
	tatal.append(Paragraph(t2, styleTitle))
	tatal.append(Spacer(1, 12))
	secondData = simpleTable(os.path.join(rdir,"Zscore.txt"),styleContext,styleContext)
	table = Table(secondData,colWidths=[4.0 * cm, 4.0 * cm, 4 * cm, 4* cm])
	table.setStyle(TableStyle([
	               ('INNERGRID', (0,0), (-1,-1), 0.25, colors.black),
	               ('BOX', (0,0), (-1,-1), 0.25, colors.black),
	               ]))
	tatal.append(table)
	tatal.append(Spacer(1, 12))

	# Pic
	ptext = '<font size=10 name="hei">染色体：</font>'
	tatal.append(Paragraph(ptext, styleTitle))
	tatal.append(Spacer(1, 12))
	im = Image(os.path.join(rdir,"Pic.txt.mini.png"), 465, 108)
	tatal.append(im)

	doc.build(tatal)

if __name__=='__main__':
	createPDF("/home/lin/work/20141211603127")

中文支持

ReportLab 本身不支持中文，要在 PDF 中显示中文，需要手动引入中文字体包。
在 C:\WINDOWS\Fonts 下寻找需要的字体，将其引入 Python 程序，利用 pdfmetrics 方法注册字体后即可使用。

#!/usr/bin/python
# -*- coding: utf-8 -*-
# python version 2.7.6

from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus import SimpleDocTemplate,Paragraph
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont

pdfmetrics.registerFont(TTFont('hei', 'ttc/simsun.ttc'))
 
stylesheet=getSampleStyleSheet()
elements = []
doc = SimpleDocTemplate('/home/lin/test.pdf')
elements.append(Paragraph('<font name="hei">学 生 成 绩 单</font>',stylesheet['Title']))
doc.build(elements)

（未完待续）