[Biopython] efetch only returns 20 records of pubmed

[David Winter]

Hi Min,

I think "retmax" is the parameter you are looking for. If you plan on 
making some huge query, be sure to do it outside of peak times (US) and 
think about using the WebEnv features ("Using the history and WebEnv" 
section of the tutorial: 
http://biopython.org/DIST/docs/tutorial/Tutorial) if you want to 
download a lot of data.

Cheers,
David

On 3/13/2012 11:18 AM, ming.xue at boehringer-ingelheim.com wrote:
> Hello,
>
> I used the biopython 1.5.9 to download some pubmed abstracts. The query from
> browser showed 409580 records. But I only got the count of 20 from
> record["IdList"] and they matched the records on the first page from browser.
> Am I blocked by NCBI or there is a parameter for page I missed?
>
> from Bio import Entrez
> Entrez.email = 'my.email at domain.com'
>
> query = Entrez.esearch(db="pubmed", term="publisher[sb]")
> record = Entrez.read(query)
> print len(record["IdList"])
>
> Thanks for your comments,
> Ming
>
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