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本文转载自：机器之心 参与：一鸣
项目作者：vinayak mehta
从 PDF 表格中获取数据是一项痛苦的工作。不久前，一位开发者提供了一个名为 Camelot 的工具，使用三行代码就能从 PDF 文件中提取表格数据。
PDF 文件是一种非常常用的文件格式，通常用于正式的电子版文件。它能够很好的将不同的排版格式固定下来，形成版面清晰且美观的展示效果。然而，对于想要从 PDF 中提取信息的人们来说，PDF 是个噩梦，尤其是表格。 大量的学术报告、论文、分析文章都使用 PDF 展示其中的表格数据，但是对于如果想要直接从表格中复制数据则会非常麻烦。不久前，有一位开发者提供了一个可从文字 PDF 中提取表格信息的工具——Camelot，能够直接将大部分表格转换为 Pandas 的 Dataframe。
据项目介绍称，Camelot 是一个 Python 工具，用于将 PDF 文件中的表格数据提取出来。
具体而言，用户可以像使用 Pandas 那样打开 PDF 文件，然后利用这个工具提取表格数据，最后再指定输出的形式（如 csv 文件）。
项目提供的 PDF 文件如图所示，假设用户需要提取这些文字之间的表格 2-1 中的信息。
>>> import camelot'foo.pdf'
#类似于Pandas打开CSV文件的形式 0 ].df # get a pandas DataFrame! 'foo.csv' , f='csv' , compress=True ) # json, excel, html, sqlite，可指定输出格式 0 ].to_csv('foo.csv' ) # to_json, to_excel, to_html, to_sqlite， 导出数据为文件 1 >0 ]7, 7 )> # 获得输出的格式 0 ].parsing_report'accuracy' : 99.02 ,'whitespace' : 12.24 ,'order' : 1 ,'page' : 1
以下为输出的结果，对于合并的单元格，Camelot 在抽取后做了空行处理，这是一个稳妥的方法。
项目作者提供了三种安装方法。首先，你可以使用 Conda 进行安装，这是最简单的。
conda install -c conda-forge camelot-py
pip install camelot-py[cv]
git clone https://www.github.com/camelot-dev/camelotcd camelot".[cv]" 下载1：OpenCV-Contrib扩展模块中文版教程 在「小白学视觉 扩展模块中文教程 ， 即可下载全网第一份OpenCV扩展模块教程中文版，涵盖扩展模块安装、SFM算法、立体视觉、目标跟踪、生物视觉、超分辨率处理 等二十多章内容。在「小白学视觉 公众号后台回复：Python视觉实战项目 ， 即可下载包括图像分割、口罩检测、车道线检测、车辆计数、添加眼线、车牌识别、字符识别、情绪检测、文本内容提取、面部识别 等31个视觉实战项目，助力快速学校计算机视觉。 在「小白学视觉 公众号后台回复：OpenCV实战项目20讲 ， 即可下载含有20 个基于OpenCV 实现20个实战项目 ，实现OpenCV学习进阶。 交流群
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