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feat: improve error handling with hint #816

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merged 2 commits into from
Dec 16, 2021
Merged

feat: improve error handling with hint #816

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d92024c
feat: improve error handling with hint
corneliusroemer Dec 15, 2021
3d1cbf8
feat: use exception chaining
corneliusroemer Dec 16, 2021
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5 changes: 4 additions & 1 deletion augur/refine.py
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Original file line number Diff line number Diff line change
Expand Up @@ -242,7 +242,10 @@ def run(args):
elif args.root in ['least-squares', 'min_dev', 'oldest']:
raise TypeError("The rooting option '%s' is only available when inferring a timetree. Please specify an explicit outgroup."%args.root)
else:
T.root_with_outgroup(args.root)
try:
T.root_with_outgroup(args.root)
except ValueError as err:
raise ValueError(f"HINT: This error may be because your specified root with name '{args.root}' was not found in your alignment file") from err

tt = TreeAnc(tree=T, aln=aln, ref=ref, gtr='JC69', verbose=1)

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