如何使用Python将网页转换为PDF

我正在寻找使用Python将网页打印为本地文件PDF的解决方案。很好的解决方案之一是使用Qt。

由于我在安装PyQt4时遇到问题,因此一开始并不起作用,因为它给出了错误消息,例如“ ImportError:没有名为PyQt4.QtCore的模块”和“ImportError:没有名为PyQt4.QtCore的模块”。

这是因为PyQt4没有正确安装。我曾经将库放在C:\ Python27 \ Lib中,但是它不适用于PyQt4。

实际上,它只需要从下载(注意要使用的正确Python版本),然后将其安装到C:\Python27(我的情况)。而已。

回答:

多亏了下面的帖子,无论页面有多少页,我都能添加要打印的网页链接地址并在生成的PDF上显示时间。

要共享脚本,如下所示:

import time

from pyPdf import PdfFileWriter, PdfFileReader

import StringIO

from reportlab.pdfgen import canvas

from reportlab.lib.pagesizes import letter

from xhtml2pdf import pisa

import sys

from PyQt4.QtCore import *

from PyQt4.QtGui import *

from PyQt4.QtWebKit import *

url = 'http://www.yahoo.com'

tem_pdf = "c:\\tem_pdf.pdf"

final_file = "c:\\younameit.pdf"

app = QApplication(sys.argv)

web = QWebView()

#Read the URL given

web.load(QUrl(url))

printer = QPrinter()

#setting format

printer.setPageSize(QPrinter.A4)

printer.setOrientation(QPrinter.Landscape)

printer.setOutputFormat(QPrinter.PdfFormat)

#export file as c:\tem_pdf.pdf

printer.setOutputFileName(tem_pdf)

def convertIt():

web.print_(printer)

QApplication.exit()

QObject.connect(web, SIGNAL("loadFinished(bool)"), convertIt)

app.exec_()

sys.exit

# Below is to add on the weblink as text and present date&time on PDF generated

outputPDF = PdfFileWriter()

packet = StringIO.StringIO()

# create a new PDF with Reportlab

can = canvas.Canvas(packet, pagesize=letter)

can.setFont("Helvetica", 9)

# Writting the new line

oknow = time.strftime("%a, %d %b %Y %H:%M")

can.drawString(5, 2, url)

can.drawString(605, 2, oknow)

can.save()

#move to the beginning of the StringIO buffer

packet.seek(0)

new_pdf = PdfFileReader(packet)

# read your existing PDF

existing_pdf = PdfFileReader(file(tem_pdf, "rb"))

pages = existing_pdf.getNumPages()

output = PdfFileWriter()

# add the "watermark" (which is the new pdf) on the existing page

for x in range(0,pages):

page = existing_pdf.getPage(x)

page.mergePage(new_pdf.getPage(0))

output.addPage(page)

# finally, write "output" to a real file

outputStream = file(final_file, "wb")

output.write(outputStream)

outputStream.close()

print final_file, 'is ready.'

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