Convert Microsot Excel (XLSX) to PDF with Python and xtopdf (Python)

2015-11-22T22:15:25-08:00

Python recipe 579128 by Vasudev Ram (excel, formats, openpyxl, pdf, python, xlsx, xtopdf).

This recipe shows how the basics of to convert the text data in a Microsoft Excel file (XLSX format) to PDF (Portable Document Format). It uses openpyxl to read the XLSX file and xtopdf to generate the PDF file.

Converting numeric strings to integers (Python)

2015-08-04T20:08:29-07:00

Python recipe 579093 by Vasudev Ram (formats, numbers, numerical, python, python2, representation).

This recipe shows how to convert numeric strings into integers, i.e. it emulates the Python int() function - partially. It does not handle negative numbers, floating point numbers, or numbers in other bases than decimal. It is only meant as a simple demo of the steps by which a string containing an integer value, is converted into an actual integer, in Python (and similarly, in other languages).

Read CSV with D and write it to PDF with Python (Python)

2016-10-26T17:49:00-07:00

Python recipe 580710 by Vasudev Ram (conversion, csv, data, files, formats, pdf, pdf_generation, xtopdf).

This recipe shows how to read data from a CSV file with a D program and write that data to a PDF file with a Python program - all in a single command-line invocation (after writing the individual programs, of course).

It requires the xtopdf toolkit, which you can get from:

https://bitbucket.org/vasudevram/xtopdf

Instructions for installing xtopdf:

http://jugad2.blogspot.in/2012/07/guide-to-installing-and-using-xtopdf.html

xtopdf in turn requires the open source version of the ReportLab toolkit, which you can get from:

http://www.reportlab.com/ftp (http://www.reportlab.com/ftp/reportlab-1.21.1.tar.gz)

It also requires the DMD compiler to compile the D program - this was the version used:

DMD32 D Compiler v2.071.2

[xtopdf] Publish Delimiter-Separated Values (DSV data) to PDF (Python)

2016-12-17T19:08:33-08:00

Python recipe 580736 by Vasudev Ram (commandline, csv, data, files, formats, pdf, pdf_generation, python, tsv, utilities, xtopdf).

This recipe shows how to publish delimiter-separated values (a commonly used tabular data format) to PDF, using the xtopdf toolkit for PDF creation. It lets the user specify the delimiter via one of two command-line options - an ASCII code or an ASCII character. As Unix filters tend to do, it can operate either on standard input or on input filenames given as command-line arguments. In the case of multiple inputs via files, each input goes to a separate PDF output file.

Put Peewee ORM data to PDF with xtopdf (Python)

2016-09-29T18:04:57-07:00

Python recipe 580704 by Vasudev Ram (conversion, converter, database, formats, orm, pdf, pdf_generation, peewee, python, python2, sqlite, xtopdf).

This recipe shows how some basics of how to fetch data from database tables managed by the Peewee ORM (a lightweight expressive ORM for Python) and write that data, formatted, to a PDF file. The recipe uses Python, the Peewee ORM and the xtopdf toolkit for PDF creation.

Number of bits needed to store an integer, and its binary representation (Python)

2017-03-12T23:10:48-07:00

Python recipe 580762 by Vasudev Ram (binary, formats, integers, numbers, representation, type).

This recipe shows how to find, via Python code, the number of bits needed to store an integer, and how to generate its binary representation. It does this for integers from 0 to 256.

More details and full output here:

https://jugad2.blogspot.in/2017/03/find-number-of-bits-needed-to-store.html

RFC 822-style parser (Python)

2010-01-09T22:46:42-08:00

Python recipe 576996 by Karl Dickman (data, formats). Revision 7.

In The Art of Unix Programming, Eric S. Raymond describes a data file metaformat based on RFC 822. [http://www.faqs.org/docs/artu/ch05s02.html#id2902039] This is a simple parser for that format.