[Biopython] History, Efetch, and returned records limits

[Peter Cock]

On Sat, Apr 14, 2012 at 9:10 PM, Lapointe, David
<David.Lapointe at umassmed.edu> wrote:
> Just curious. Is there a delay in the code? E.g 3 or 4 secs between requests.

The Bio.Entrez code obeys the current NCBI limit of at most 3 queries
per second by limiting the query gap to at least 0.333333334s.

Back in 2009 this was relaxed from the NCBI's original limit of 3s
between queries.

Peter