Version Compatibility

Reference examples tested with: BioPython 1.83+, Entrez Direct 21.0+

Before using code patterns, verify installed versions match. If versions differ:

• Python: pip show <package> then help(module.function) to check signatures

If code throws ImportError, AttributeError, or TypeError, introspect the installed package and adapt the example to match the actual API rather than retrying.

Entrez Search

Search NCBI databases using Biopython's Entrez module (ESearch, EInfo, EGQuery utilities).

"Search NCBI for records" → Query any NCBI database by keyword, organism, or field-qualified terms and retrieve matching record IDs.

• Python: Entrez.esearch(db=..., term=...) (BioPython)
• CLI: esearch -db nucleotide -query "term" (Entrez Direct)

Required Setup