如何让 Jupyter / IPython Notebook nbconvert 输出不会溢出页面的 PDF？

Question

当我通过ipython nbconvert my-notebook.ipynb --to PDF 将 Jupyter / IPython Notebook 转换为 PDF 时，它看起来不错，除了一些长行和所有输出只是超出了页面边缘，没有换行。我怎样才能让它停止溢出并换行？

Answer 1

我建议使用稍微不同的方法，而不是直接使用终端，而是使用这个带有 GUI 的 Python 小脚本从 Jupyter Notebooks 获取真正高质量的 pdf。它支持语法高亮，不会弄乱 Latex 或图形。

# Script adapted from CloudCray
# Original Source: https://gist.github.com/CloudCray/994dd361dece0463f64a
# 2016--06-29
# Run this script in the same folder as the notebook(s) you wish to convert
# This will create both an HTML and a PDF file
#
# You'll need wkhtmltopdf (this will keep syntax highlighting, etc)
#   http://wkhtmltopdf.org/downloads.html

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:\n\t{0}".format(fn))
        return 1

main()