How to Global Query on All NCBI Databases with Bio.Entrez.egquery() function?

Bio.Entrez.egquery() function allows you to perform a global search on all NCBI Databases for a given key word. It uses the Entrez Web services provided by www.ncbi.nlm.nih.gov.

Here is an example on how to do a global search with the Bio.Entrez.efetch() function.

fyicenter$ python 
>>> from Bio import Entrez
>>> Entrez.email = "A.N.Other@example.com"

>>> handle = Entrez.egquery(term="biopython")
>>> record = Entrez.read(handle)

>>> record.keys()
dict_keys(['Term', 'eGQueryResult'])

>>> for row in record["eGQueryResult"]:
...   print(row["DbName"], row["Count"])
... 
pubmed 41
pmc 2708
mesh 0
books 2
pubmedhealth Error
omim 0
ncbisearch 1
nuccore 2
nucgss 0
nucest 0
protein 0
genome 0
structure 0
taxonomy 0
snp 0
dbvar 0
gene 0
sra 1377
biosystems Error
unigene 0
cdd 0
clone 0
popset 0
geoprofiles 0
gds 17
homologene 0
pccompound 0
pcsubstance 0
pcassay 0
nlmcatalog 0
probe 0
gap 0
proteinclusters 0
bioproject 1
biosample 0
biocollections 0

Review those 2 matches in the "books" database.

>>> books = record["eGQueryResult"][3]
>>> books
{'DbName': 'books', 'MenuName': 'Books', 'Count': '2', 'Status': 'Ok'}

⇒ Search History with Bio.Entrez for Subsequent Calls

⇐ Search for Related Items in NCBI with Bio.Entrez.elink()

⇑ Biopython - Tools for Biological Computation

⇑⇑ OBF (Open Bioinformatics Foundation) Tools