def epost(db, **keywds):
 cgi = 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/epost.fcgi'
 variables = {'db': db}
 variables.update(keywds)
 return _open(cgi, variables, post=True)

def epost ( db , ** keywds ) : cgi = 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/epost.fcgi' variables = { 'db' : db } variables . update ( keywds ) return _open ( cgi , variables , post = True )
post a file of identifiers for future use .