Answer stability round 1: README's pick.go and datatype.go rows name what stayed, geo.py's options sort with each script's own, geo.py claims only shared steps, route defines fromRow as pathPos does, and disagreement's panic names the kinds

data-import/geo.py

@@ -1,4 +1,4 @@
-"""The steps every country's geo import takes."""
+"""The steps a country's geo import may share with another's."""
 import argparse
 import collections
 import math
@@ -9,12 +9,12 @@ DATA = Path(__file__).resolve().parent.parent / "data" / "geo"
 CACHE = Path(__file__).resolve().parent / "cache"
 
 
-def parser(doc, country):
-    """The options every country's import takes; a script adds its own before parse_args."""
+def parser(doc, country, **own):
+    """The options every country's import takes and the script's own, keyed by name with "_" for "-", in name order."""
+    options = {"cache": {"default": str(CACHE)}, "out": {"default": str(DATA / country)}, "streets_per_locality": {"type": int, "default": 10}, **own}
     p = argparse.ArgumentParser(description=doc.splitlines()[0])
-    p.add_argument("--cache", default=str(CACHE))
-    p.add_argument("--out", default=str(DATA / country))
-    p.add_argument("--streets-per-locality", type=int, default=10)
+    for name in sorted(options):
+        p.add_argument("--" + name.replace("_", "-"), **options[name])
     return p