- How To Install Pypdf2
- How To Install Pypdf2 Python For Mac Windows 10
- How To Install Pypdf2 Python For Mac Os
- How To Use Pypdf2
Bob Savage <bobsavage@mac.com>
Python on a Macintosh running Mac OS X is in principle very similar to Python onany other Unix platform, but there are a number of additional features such asthe IDE and the Package Manager that are worth pointing out.
4.1. Getting and Installing MacPython¶
Mac OS X 10.8 comes with Python 2.7 pre-installed by Apple. If you wish, youare invited to install the most recent version of Python 3 from the Pythonwebsite (https://www.python.org). A current “universal binary” build of Python,which runs natively on the Mac’s new Intel and legacy PPC CPU’s, is availablethere.
What you get after installing is a number of things:
- FiberFit is a portable Python application for Mac and Windows. It uses computer vision to analyze ligament patterns in 2-D 8-bit images. A results summary table (.csv) and image summary documents (.pdf) may be exported by the user.
- Install Python3 on a Mac Practical Programming classes and workshops for everyone who wants to learn how to code from scratch. If you want to learn programming join us.
The module we will be using in this tutorial is PyPDF2. As it is an external module, the first normal step we have to take is to install that module. For that, we will be using pip, which is (based on Wikipedia): A package management system used to install and manage software packages written in Python.
- A
Python3.8
folder in yourApplications
folder. In hereyou find IDLE, the development environment that is a standard part of officialPython distributions; and PythonLauncher, which handles double-clicking Pythonscripts from the Finder. - A framework
/Library/Frameworks/Python.framework
, which includes thePython executable and libraries. The installer adds this location to your shellpath. To uninstall MacPython, you can simply remove these three things. Asymlink to the Python executable is placed in /usr/local/bin/.
How To Install Pypdf2
The Apple-provided build of Python is installed in
/System/Library/Frameworks/Python.framework
and /usr/bin/python
,respectively. You should never modify or delete these, as they areApple-controlled and are used by Apple- or third-party software. Remember thatif you choose to install a newer Python version from python.org, you will havetwo different but functional Python installations on your computer, so it willbe important that your paths and usages are consistent with what you want to do.IDLE includes a help menu that allows you to access Python documentation. If youare completely new to Python you should start reading the tutorial introductionin that document.
If you are familiar with Python on other Unix platforms you should read thesection on running Python scripts from the Unix shell.
4.1.1. How to run a Python script¶
Your best way to get started with Python on Mac OS X is through the IDLEintegrated development environment, see section The IDE and use the Help menuwhen the IDE is running.
How To Install Pypdf2 Python For Mac Windows 10
If you want to run Python scripts from the Terminal window command line or fromthe Finder you first need an editor to create your script. Mac OS X comes with anumber of standard Unix command line editors, vim andemacs among them. If you want a more Mac-like editor,BBEdit or TextWrangler from Bare Bones Software (seehttp://www.barebones.com/products/bbedit/index.html) are good choices, as isTextMate (see https://macromates.com/). Other editors includeGvim (http://macvim-dev.github.io/macvim/) and Aquamacs(http://aquamacs.org/).
To run your script from the Terminal window you must make sure that
/usr/local/bin
is in your shell search path.To run your script from the Finder you have two options:
- Drag it to PythonLauncher
- Select PythonLauncher as the default application to open yourscript (or any .py script) through the finder Info window and double-click it.PythonLauncher has various preferences to control how your script islaunched. Option-dragging allows you to change these for one invocation, or useits Preferences menu to change things globally.
4.1.2. Running scripts with a GUI¶
With older versions of Python, there is one Mac OS X quirk that you need to beaware of: programs that talk to the Aqua window manager (in other words,anything that has a GUI) need to be run in a special way. Use pythonwinstead of python to start such scripts.
With Python 3.8, you can use either python or pythonw.
4.1.3. Configuration¶
Python on OS X honors all standard Unix environment variables such as
PYTHONPATH
, but setting these variables for programs started from theFinder is non-standard as the Finder does not read your .profile
or.cshrc
at startup. You need to create a file~/.MacOSX/environment.plist
. See Apple’s Technical Document QA1067 fordetails.For more information on installation Python packages in MacPython, see sectionInstalling Additional Python Packages.
4.2. The IDE¶
MacPython ships with the standard IDLE development environment. A goodintroduction to using IDLE can be found athttp://www.hashcollision.org/hkn/python/idle_intro/index.html.
4.3. Installing Additional Python Packages¶
There are several methods to install additional Python packages:
- Packages can be installed via the standard Python distutils mode (
pythonsetup.pyinstall
). - Many packages can also be installed via the setuptools extensionor pip wrapper, see https://pip.pypa.io/.
4.4. GUI Programming on the Mac¶
There are several options for building GUI applications on the Mac with Python.
PyObjC is a Python binding to Apple’s Objective-C/Cocoa framework, which isthe foundation of most modern Mac development. Information on PyObjC isavailable from https://pypi.org/project/pyobjc/.
The standard Python GUI toolkit is
tkinter
, based on the cross-platformTk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with OSX by Apple, and the latest version can be downloaded and installed fromhttps://www.activestate.com; it can also be built from source.wxPython is another popular cross-platform GUI toolkit that runs natively onMac OS X. Packages and documentation are available from https://www.wxpython.org.
PyQt is another popular cross-platform GUI toolkit that runs natively on MacOS X. More information can be found athttps://riverbankcomputing.com/software/pyqt/intro.
4.5. Distributing Python Applications on the Mac¶
The standard tool for deploying standalone Python applications on the Mac ispy2app. More information on installing and using py2app can be foundat http://undefined.org/python/#py2app.
How To Install Pypdf2 Python For Mac Os
4.6. Other Resources¶
The MacPython mailing list is an excellent support resource for Python users anddevelopers on the Mac:
Another useful resource is the MacPython wiki:
Latest version Released:
Converts a scanned PDF into an OCR'ed pdf using Tesseract-OCR and Ghostscript
Project description
PyPDFOCR - Tesseract-OCR based PDF filing
This program will help manage your scanned PDFs by doing the following:
- Take a scanned PDF file and run OCR on it (using the Tesseract OCRsoftware from Google), generating a searchable PDF
- Optionally, watch a folder for incoming scanned PDFs andautomatically run OCR on them
- Optionally, file the scanned PDFs into directories based on simplekeyword matching that you specify
- Evernote auto-upload and filing based on keyword search
- Email status when it files your PDF
More links:
Usage:
Single conversion:
If you have a language pack installed, then you can specify it with the-l option:
Automatic filing:
To automatically move the OCR’ed pdf to a directory based on a keyword,use the -f option and specify a configuration file (described below):
You can also do this in folder monitoring mode:
Filing based on filename match:
If no keywords match the contents of the filename, you can optionallyallow it to fallback to trying to find keyword matches with the PDFfilename using the -n option. For example, you may have receipts alwaysnamed as receipt_2013_12_2.pdf by your scanner, and you want to movethis to a folder called ‘receipts’. Assuming you have a keywordreceipt matching to folder receipts in your configuration fileas described below, you can run the following and have this filed evenif the content of the pdf does not contain the text ‘receipt’:
Configuration file for automatic PDF filing
The config.yaml file above is a simple folder to keyword matching textfile. It determines where your OCR’ed PDFs (and optionally, the originalscanned PDF) are placed after processing. An example is given below:
The target_folder is the root of your filing cabinet. Any PDF movingwill happen in sub-directories under this directory.
The folders section defines your filing directories and the keywordsassociated with them. In this example, we have three filing directories(finances, travl, receipts), and some associated keywords for eachfiling directory. For example, if your OCR’ed PDF contains the phrase“american express” (in any upper/lower case), it will be filed intodocs/filed/finances
The default_folder is where the OCR’ed PDF is moved to if there isno keyword match.
The original_move_folder is optional (you can comment it out with# in front of that line), but if specified, the original scanned PDFis moved into this directory after OCR is done. Otherwise, if this fieldis not present or commented out, your original PDF will stay where itwas found.
If there is any naming conflict during filing, the program will add anunderscore followed by a number to each filename, in order to avoidoverwriting files that may already be present.
Evernote upload:
Evernote authentication token
To enable Evernote support, you will need to get a developer token foryour Evernoteaccount. Youshould note that this script will never delete or modify existing notesin your account, and limits itself to creating new Notebooks and Notes.Once you get that token, you copy and paste it into your configurationfile as shown below
Evernote filing usage
To automatically upload the OCR’ed pdf to a folder based on a keyword,use the -e option instead of the -f auto filing option.
Similarly, you can also do this in folder monitoring mode:
Evernote filing configuration file
The config file shown above only needs to change slightly. The folderssection is completely unchanged, but note that target_folder is thename of your “Notebook stack” in Evernote, and the default_foldershould just be the default Evernote upload notebook name.
Auto email
You can have PyPDFOCR email you everytime it converts a file and filesit. You need to first specify the following lines in the configurationfile and then use the -m option when invoking pypdfocr:
Advanced options
Fine-tuning Tesseract/Ghostscript/others
You can specify Tesseract and Ghostscript executable locations manually, aswell as the number of concurrent processes allowed during preprocessing andtesseract. Use the following in your configuration file:
Handling disk time-outs
If you need to increase the time interval (default 3 seconds) between newdocument scans when pypdfocr is watching a directory, you can specify the followingoption in the configuration file:
Installation
Using pip
PyPDFOCR is available in PyPI, so you can just run:
Please note that some of the 3rd-party libraries required by PyPDFOCR wiillrequire some build tools, especially on a default Ubuntu system. If you runinto any issues using pip install, you may want to install thefollowing packages on Ubuntu and try again:
- gcc
- libjpeg-dev
- zlib-bin
- zlib1g-dev
- python-dev
For those on Windows, because it’s such a pain to get all the PILand PDF dependencies installed, I’ve gone ahead and made an executablecalledpypdfocr.exe
You still need to install Tesseract, GhostScript, etc. as detailed below inthe external dependencies list.
Manual install
Clone the source directly from github (you need to have git installed):
Then, install the following third-party python libraries:
- Pillow (Python Imaging Library) https://pillow.readthedocs.org/en/3.1.x/
- ReportLab (PDF generation library)http://www.reportlab.com/opensource/
- Watchdog (Cross-platform fhlesystem events monitoring)https://pypi.python.org/pypi/watchdog
- PyPDF2 (Pure python pdf library)
These can all be installed via pip:
How To Use Pypdf2
You will also need to install the external dependencies listed below.
External Dependencies
PyPDFOCR relies on the following (free) programs being installed and inthe path:
- Tesseract OCR software https://code.google.com/p/tesseract-ocr/
- GhostScript http://www.ghostscript.com/
- ImageMagick http://www.imagemagick.org/
- Poppler http://poppler.freedesktop.org/ (Windows)
Poppler is only required if you want pypdfocr to figure out the original PDF resolutionautomatically; just make sure you have pdfimages in your path. Note that thexpdf provided pdfimages does not work for this,because it does not support the -list option to list the table of images in a PDF file.
On Mac OS X, you can install these using homebrew:
On Windows, please use the installers provided on their download pages.
** Important ** Tesseract version 3.02.02 or newer required(apparently 3.02.01-6 and possibly others do not work due to a hocroutput format change that I’m not planning to address). On Ubuntu, youmay need to compile and install it manually by following theseinstructions
Also note that if you want Tesseract to recognize rotated documents (upside down, or rotated 90 degrees)then you need to find your tessdata directory and do the following:
osd stands for Orientation and Script Detection, so you need to copy the .traineddatafor whatever language you want to scan in as osd.traineddata. If you don’t do this step,then any landscape document will produce garbage
Disclaimer
While test coverage is at 84% right now, Sphinx docs generation is at anearly stage. The software is distributed on an “AS IS” BASIS, WITHOUTWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Version | Date | Changes |
v0.9.1 | 10/11/16 | Fixes (#43, #41) |
v0.9.0 | 2/29/16 | Fixed rotated page text, Mac OS X invisible fonts, and pdf merge slowdown |
v0.8.5 | 2/21/16 | Better ctrl-c and cleanup behavior |
v0.8.4 | 2/18/16 | Maintenance release |
v0.8.3 | 2/18/16 | Bug fix for multiprocessing on windows, ctrl-c interrupt, and integer keywords |
v0.8.2 | 12/8/14 | Fixed imagemagick invocation on windows. Parallelized preprocessing and tesseract execution |
v0.8.1 | 12/5/14 | Added –skip-preprocess option, scan_interval option, and fixed too many open files bug during page overlay |
v0.8.0 | 10/27/14 | Added preprocessing to clean up prior to tesseract, bug fixes on file names with spaces/dots |
v0.7.6 | 9/10/14 | Fixed issue 17 rotation bug |
v0.7.5 | 8/18/14 | Update for Tesseract 3.03 .hocr filename change |
v0.7.4 | 3/28/14 | Bug fix on pdf assembly |
v0.7.3 | 3/27/14 | Modified internals to use single image per page (instead of multipage tiff). Also enabled orientation detection |
v0.7.2 | 3/26/14 | Switched from Pil to Pillow. Now uses original images from PDF in output pdf (no dpi/color/quality changes!) |
v0.7.1 | 3/25/14 | OCR Language is now an option |
v0.7.0 | 3/25/14 | Now honors original pdf resolution |
v0.6.1 | 2/16/14 | Bug fix for pdfs with only numbers in the filename |
v0.6.0 | 1/16/14 | Added filing based on filename match as fallback, added tesseract version check |
v0.5.4 | 1/12/14 | Fixed bug with reordering of text pages on certain platforms(glob) |
v0.5.3 | 12/12/13 | Fix to evernote server specification |
v0.5.2 | 12/08/13 | Fix to lowercase keywords |
v0.5.1 | 11/02/13 | Fixed a bunch of windows critical path handling issues |
v0.5.0 | 10/30/13 | Email status added, 90% test coverage |
v0.4.1 | 10/28/13 | Made HOCR parsing more robust |
v0.4.0 | 10/28/13 | Added early Evernote upload support |
v0.3.1 | 10/24/13 | Path fix on windows |
v0.3.0 | 10/23/13 | Added filing of converted pdfs using a configuration file to specify target directories based on keyword matches in the pdf text |
v0.2.2 | 10/22/13 | Added a console script to put the pypdfocr script into your bin |
v0.2.1 | 10/22/13 | Fix to initial packaging problem. |
v0.2.0 | 10/21/13 | Initial release. |
Todo list
- #43 version check for tesseract
- On windows, search for pdfimages and imagemagick instead of relying on path
- Split up into flow steps
- Run more robustness tests for watching networked shares
- Add more docstrings
- Add more option specifiers to tesseract and ghostscript
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