文献计量的大数据

importhttp

fromBioimportEntrez, Medline

Entrez.email ='foobar@example.org'

handle = Entrez.esearch(db='pubmed',term='"Meta-Analysis" [Publication Type]',rettype='count')

record = Entrez.read(handle)

count = record['Count']

print(count)

handle = Entrez.esearch(db='pubmed',term='"Meta-Analysis" [Publication Type]',retmax=count,usehistory='y')

record = Entrez.read(handle)

webenv = record['WebEnv']

query_key = record['QueryKey']

foriinrange(,int(count),10000):

try:

handle = Entrez.efetch(db='pubmed',rettype='medline',retmode='text',webenv=webenv,query_key=query_key,retmax=10000,retstart=i)

forrecordinMedline.parse(handle):

withopen('meta.txt','a')asf:

print(record['JT'],end='\n',file=f)

excepthttp.client.IncompleteReadasexception:

print('%s'% exception)