Our doctest:

>>> from Bio import Entrez
>>> Entrez.email = "[email protected]"
>>> handle = Entrez.egquery(term="biopython")
>>> record = Entrez.read(handle)
>>> handle.close()
>>> for row in record["eGQueryResult"]:
...     if "pmc" in row["DbName"]:
...         print(int(row["Count"]) > 60)
True

is failing with urllib.error.URLError: <urlopen error [Errno 8] nodename nor servname provided, or not known>

This appears to be a general problem with EGQuery, consider the example given on https://www.ncbi.nlm.nih.gov/books/NBK25499/#chapter4.EGQuery which is: https://eutils.ncbi.nlm.nih.gov/entrez/eutils/egquery.fcgi?term=asthma

Right now in Firefox this redirects to https://ext-http-eutils.linkerd.ncbi.nlm.nih.gov/gquery?term=asthma&retmode=xml and gives "Server Not Found".

i.e. This looks like an NCBI problem, not a Biopython error.