iNaturalist checklist creator. Point at an iNat export file, and it prints all the species sorted by taxonomic Class.

inat-checklist.py

#!/usr/bin/env python3
# iNaturalist checklist creator
# Point at an iNat export file, and it prints all the species sorted by taxonomic Class.

from operator import itemgetter

target = "observations-xxxxxx.csv"
i = 0

if __name__ == "__main__":
    
    data = {}
    
    with open(target, 'r') as f:
        for l in f:
            x = l.split(',')
            
            try:
                data[x[2].strip()].add((x[0], x[1]))
            except KeyError:
                data[x[2].strip()] = set([(x[0], x[1])])
    
    for c in data:
        print('\n' + c + '\n')
        
        for x in sorted(data[c], key=itemgetter(0)):
            i += 1
            print(x[0] + ':', x[1])
    
    print(i)