This is a Google Colab notebook that analyzes ISO 639 language codes (https://en.wikipedia.org/wiki/List_of_ISO_639_language_codes), ISO 3166 codes for the representation of names of countries and their subdivisions (https://en.wikipedia.org/wiki/ISO_3166), and Statistics Division of the United Nations Secretariat (UNSD) M49 Standard Country or Area Codes for Statistical Use (https://unstats.un.org/unsd/methodology/m49/).
Use https://nbviewer.jupyter.org/github/dcpetty/google-colaboratory/blob/main/iso/iso.ipynb to view it in nbviewer.
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