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split_aseq

Sometimes you have to look at MARC-aseq files in a text editor. As aseq files can contain lots of records, it can become tedious to scan them with the naked eye. split_aseq splits aseq files into one file per record and does some pretty printing anlong the way.

How to use it

Running the script directly

split_aseq requires Python 3.6 and has been tested under Windows 10 so far. So if you have Python 3.6 installed and are not afraid of the command line, do the following:

  • Clone or copy the repo and put your source file into the directory “infiles”.
  • Run the script with python split_aseq.py
  • That’s it

pre-built executable

  • Is to come.

What you get

If the programm runs successfully, there will be a folder named outfiles where you find the following:

  • There will be one single file for each record in your source file.
    • If the input files are named like this: m2m_ubg_st_2017-08-01_17-00.marc.seq the name of the output files inherit the date and time of the input file. The file names will look like this: AC12345678_2017-08-01_17-00.seq
    • If not, it is only the ID from 001, like this: AC12345678.seq
    • If your input files have mixed naming konventions, the output files will do so too.
  • a file called titles.txt where you find a list of identifiers (i. e. the filenames) and the corresponding title information from MARC field 245.
  • All contents of the folder are erased everytime the script is executed. So don’t forget to take your files with you if you plan to keep them.

Known limitations

This is a quick an dirty script, so don’t use it for critical stuff. I am not a programmer, I don’t take any responsibility. Still there are things that I might or might not implement in the future, should I or somebody else need it:

  • At this time, the script only processes aseq-files that have the following format: 
    013638981 24500 L $$aProdukt- und Markenpiraterie - Risiken und Abwehrstrategien

    All my input files look like that, so theres no handling for files without the leading Number.

  • Output files for the same record are overwritten, if the input files don’t follow the naming convention mentioned above.