使用Python生成pdf文件

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Python平台的优秀PDF报表类库Reportlab。它不属于Python的标准类库，所以必须手动下载类库包并安装：  
    yum install python-reportlab -y
    这篇文章将介绍reportlab中基本常用的api，使用canvas画出一份整洁的PDF报表。详细内容参考reportlab的官方user guide。

示例一、生成一段文字
   
#!/usr/bin/python
from reportlab.pdfgen import canvas
def hello():
    c = canvas.Canvas("helloworld.pdf")
    c.drawString(100,100,"Hello,World")
    c.showPage()
    c.save()
hello()


示例二、生成单个文件的pdf


   
#需要安装字体 yum install wqy-* -y
#!/usr/bin/python
import datetime
import subprocess
import codecs
from reportlab.pdfgen import canvas
from reportlab.lib.units import inch
from reportlab.lib.pagesizes import A4, landscape
import reportlab.pdfbase.ttfonts  
reportlab.pdfbase.pdfmetrics.registerFont(reportlab.pdfbase.ttfonts.TTFont('song', '/usr/share/fonts/cn/msjh.ttf'))  
import reportlab.lib.fonts  
def disk1_report():
p1 = subprocess.Popen("cat cmd1.log ",shell=True,stdout=subprocess.PIPE)
return p1.stdout.readlines()
def create_pdf(input,output="disk1.pdf"):
now = datetime.datetime.today()
date = now.strftime("%h %d %Y %H:%M:%S")
c = canvas.Canvas(output,pagesize=A4)
c.setFont('song',10)
textobject = c.beginText()
textobject.setTextOrigin(1*inch,11*inch)
textobject.textLines('''Disk Capacity Report: %s ''' % date )
for line in input:
  textobject.textLine(line.strip())
c.drawText(textobject)
c.showPage()
c.save()
report = disk1_report()
create_pdf(report)

示例三、循环生成指定目录下的多个文件（）

   
#!/usr/bin/python
import os
import os.path
import datetime
import subprocess
from reportlab.lib.pagesizes import A4, landscape
from reportlab.pdfgen import canvas
from reportlab.lib.units import inch
logdir = "/var/www/device/check_log"
for root,dirs,filenames in os.walk(logdir):
  for filename in filenames:
    v = root+os.sep+filename
    os.environ['file'] = str(v)
    def disk_report():
      p = subprocess.Popen("cat $file ",shell=True,stdout=subprocess.PIPE)
      return p.stdout.readlines()
    def create_pdf(input,output="/var/www/device/check_pdf/"+filename+".pdf"):
     now = datetime.datetime.today()
     date = now.strftime("%h %d %Y %H:%M:%S")
     c = canvas.Canvas(output,pagesize=A4)
     textobject = c.beginText()
     textobject.setTextOrigin(1*inch,11*inch)
     textobject.textLines('''Disk Capacity Report: %s ''' % date )
     for line in input:
      textobject.textLine(line.strip())
     c.drawText(textobject)
     c.showPage()
     c.save()
    report = disk_report()
    create_pdf(report)