ipynb to pdf

Q: 如何把jupyter notebook 转为 pdf 文档?
A: 尝试了几种python包, 结果都没有成功. 包括: xhtml2pdf,
查看官方的介绍说用pandoc也是一种方法, 但是觉得安装一个可怕的Latex和pandoc太麻烦了.

还好, 找到了一个开源方法: 用wkhtmltopdf 程序.
用python写一个脚本, 调用wkhtmltopdf, 运行命令行指令, 得以实现. 非常符合我的预期. 简明, 优雅.

wkhtml2pdf 简介

wkhtmltopdf，一个集成好了的exe文件（C++编写），

基本的调用方法是:

"c:Program Filesinwkhtmltopdf.exe" https://github.com/mementum/backtrader/blob/master/docs2/signal_strategy/signal_strategy.rst signal_strategy.pdf

Loading pages (1/6)
Counting pages (2/6)
Resolving links (4/6)
Loading headers and footers (5/6)
Printing pages (6/6)
Done

C:Documents and SettingsAdministratorduanqsstrategy_study>dir *.pdf

 驱动器 C 中的卷是 160GB_XP
 卷的序列号是 EC5F-C44B

 C:Documents and SettingsAdministratorduanqsstrategy_study 的目录

2017-04-17  14:47           120,295 signal_strategy.pdf
2017-04-17  13:32           597,111 backtest.pdf
               2 个文件        717,406 字节
               0 个目录 19,999,031,296 可用字节

可以先在命令行测试一下，有其他的需要, 可以在命令行通过wkhtmltopdf --help查询，

如果是超长页的话，可以用命令:

wkhtmltopdf.exe http://passport.yupsky.com/ac/register e:yupskyreg.pdf -H --outline

Here:
-H 是显示扩展帮助
--outline 是添加pdf的左侧概要！(缺省设置)

而且可以批量生成哦，中间用空格隔开

python 脚本: (封装了运行wkhtml2pdf.exe 命令行的py脚本)

# code:utf-8

'''
IPython/Jupyter Problems saving notebook as PDF - Stack Overflow  
http://stackoverflow.com/questions/29156653/ipython-jupyter-problems-saving-notebook-as-pdf

This Python script has GUI to select with explorer a Ipython Notebook you want to convert to pdf. 
The approach with wkhtmltopdf is the only approach I found works well and provides high quality pdfs. 
Other approaches described here are problematic, syntax highlighting does not work or graphs are messed up.

You'll need to install wkhtmltopdf: http://wkhtmltopdf.org/downloads.html
and Nbconvert

pip install nbconvert
# OR
conda install nbconvert

'''
# Script adapted from CloudCray
# Original Source: https://gist.github.com/CloudCray/994dd361dece0463f64a
# 2016--06-29
# This will create both an HTML and a PDF file

import subprocess
import os
from Tkinter import Tk
from tkFileDialog import askopenfilename

WKHTMLTOPDF_PATH = "C:/Program Files/wkhtmltopdf/bin/wkhtmltopdf"  # or wherever you keep it

def export_to_html(filename):
    cmd = 'ipython nbconvert --to html "{0}"'
    subprocess.call(cmd.format(filename), shell=True)
    return filename.replace(".ipynb", ".html")


def convert_to_pdf(filename):
    cmd = '"{0}" "{1}" "{2}"'.format(WKHTMLTOPDF_PATH, filename, filename.replace(".html", ".pdf"))
    subprocess.call(cmd, shell=True)
    return filename.replace(".html", ".pdf")


def export_to_pdf(filename):
    fn = export_to_html(filename)
    return convert_to_pdf(fn)

def main():
    print("Export IPython notebook to PDF")
    print("    Please select a notebook:")

    Tk().withdraw() # Starts in folder from which it is started, keep the root window from appearing 
    x = askopenfilename() # show an "Open" dialog box and return the path to the selected file
    x = str(x.split("/")[-1])

    print(x)

    if not x:
        print("No notebook selected.")
        return 0
    else:
        fn = export_to_pdf(x)
        print("File exported as:
	{0}".format(fn))
        return 1

main()

这里也记录一下尝试xhtml2pdf的经过.

安装完了以后, 编写脚本, 运行时主要是: 卡在了html5lib这个包里:
异常是:
inputstream
CSS parser
等等.
搞定不了, 所以放弃之.

install xhtml2pdf and update html5lib from old vertion to new version (1.0b8)

Here is the logging:

C:Documents and SettingsAdministrator>pip install xhtml2pdf
Collecting xhtml2pdf
  Downloading xhtml2pdf-0.0.6.zip (120kB)
    100% |████████████████████████████████| 122kB 467kB/s
Collecting html5lib (from xhtml2pdf)
  Using cached html5lib-0.999999999-py2.py3-none-any.whl
Collecting pyPdf2 (from xhtml2pdf)
  Downloading PyPDF2-1.26.0.tar.gz (77kB)
    100% |████████████████████████████████| 81kB 10kB/s
Requirement already satisfied: Pillow in d:anaconda2libsite-packages (from xhtml2pdf)
Collecting reportlab>=2.2 (from xhtml2pdf)
  Downloading reportlab-3.4.0-cp27-cp27m-win32.whl (2.1MB)
    100% |████████████████████████████████| 2.1MB 261kB/s
Collecting webencodings (from html5lib->xhtml2pdf)
  Downloading webencodings-0.5.1-py2.py3-none-any.whl
Requirement already satisfied: setuptools>=18.5 in d:anaconda2libsite-packages (from html5lib->xhtml2pdf)
Requirement already satisfied: six in d:anaconda2libsite-packages (from html5lib->xhtml2pdf)
Requirement already satisfied: pip>=1.4.1 in d:anaconda2libsite-packages (from reportlab>=2.2->xhtml2pdf)
Requirement already satisfied: packaging>=16.8 in d:anaconda2libsite-packages (from setuptools>=18.5->html5lib->xhtml
2pdf)
Requirement already satisfied: appdirs>=1.4.0 in d:anaconda2libsite-packages (from setuptools>=18.5->html5lib->xhtml2
pdf)
Requirement already satisfied: pyparsing in d:anaconda2libsite-packages (from packaging>=16.8->setuptools>=18.5->html
5lib->xhtml2pdf)
Building wheels for collected packages: xhtml2pdf, pyPdf2
  Running setup.py bdist_wheel for xhtml2pdf ... done
  Stored in directory: C:Documents and SettingsAdministratorLocal SettingsApplication DatapipCachewheelsecebdb
13a2be9c15f492c65086709a69042924ebfb7aa4c4cc7284f1
  Running setup.py bdist_wheel for pyPdf2 ... done
  Stored in directory: C:Documents and SettingsAdministratorLocal SettingsApplication DatapipCachewheels866a6a
1ce004a5996894d33d93e1fb1b67c30973dc945cc5875a1dd0
Successfully built xhtml2pdf pyPdf2
Installing collected packages: webencodings, html5lib, pyPdf2, reportlab, xhtml2pdf
Successfully installed html5lib-0.999999999 pyPdf2-1.26.0 reportlab-3.4.0 webencodings-0.5.1 xhtml2pdf-0.0.6

C:Documents and SettingsAdministrator>pip install html5lib==1.0b8
Collecting html5lib==1.0b8
  Downloading html5lib-1.0b8.tar.gz (889kB)
    100% |████████████████████████████████| 890kB 311kB/s
Requirement already satisfied: six in d:anaconda2libsite-packages (from html5lib==1.0b8)
Building wheels for collected packages: html5lib
  Running setup.py bdist_wheel for html5lib ... done
  Stored in directory: C:Documents and SettingsAdministratorLocal SettingsApplication DatapipCachewheelsd4d1b
a6b6f9f204af55c9bb8c97eae2a78b690b7150a7b850bb9403
Successfully built html5lib
Installing collected packages: html5lib
  Found existing installation: html5lib 0.999999999
    Uninstalling html5lib-0.999999999:
      Successfully uninstalled html5lib-0.999999999
Successfully installed html5lib-1.0b8

C:Documents and SettingsAdministrator>