pytaxonkit

Python bindings for the TaxonKit library. Results of queries are returned as pandas data frames, dictionaries, and other convenient data structures.

Install

Installation with Conda is recommended. (See environment.yaml for details on prerequisites if you want to try a different installation method.)

conda install -c bioconda pytaxonkit

Please follow the taxonkit instructions for downloading the NCBI Taxonomy database dump files. By default, taxonkit and pytaxonkit search for these files in ~/.taxonkit/, but this directory can be overridden by setting the data_dir appropriately for the functions described below. Execute help(pytaxonkit.name2taxid) (and so on) from the Python interpreter for more details.

Usage

pytaxonkit provides convenient access to TaxonKit operations from Python for use in the interactive interpreter, IPython, Jupyter notebooks, or custom Python code.

NOTES

• The reformat operation is automatically run by pytaxonkit.lineage and cannot be invoked independently.
• The genautocomplete operation is specific to the shell and is not supported.
• Several other operations are not supported, including cami-filter, create-taxdump, profile2cami, and taxid-changelog.
• The pytaxonkit.__version__ variable refers to the version number of the Python bindings, while the pytaxonkit.__taxonkitversion__ variable corresponds to the version of the installed TaxonKit program. These version numbers are not necessarily equal.

name2taxid

>>> import pytaxonkit
>>> names = ['Phyllobolus spinuliferus', 'Alteromonas putrefaciens', 'Rexia erectus']
>>> pytaxonkit.name2taxid(names)
                       Name   TaxID     Rank
0  Phyllobolus spinuliferus  359607  species
1  Alteromonas putrefaciens      24  species
2             Rexia erectus  262902  species
>>> pytaxonkit.name2taxid(names, sciname=True)
                       Name  TaxID  Rank
0  Phyllobolus spinuliferus   <NA>  <NA>
1  Alteromonas putrefaciens   <NA>  <NA>
2             Rexia erectus   <NA>  <NA>

lineage

>>> import pytaxonkit
>>> result = pytaxonkit.lineage([7399, 1973489])
>>> result.columns
Index(['TaxID', 'Code', 'Name', 'Lineage', 'LineageTaxIDs', 'Rank',
       'FullLineage', 'FullLineageTaxIDs', 'FullLineageRanks'],
      dtype='object')
>>> result[['TaxID', 'Lineage', 'LineageTaxIDs']]
     TaxID                                            Lineage                          LineageTaxIDs
0     7399        Eukaryota;Arthropoda;Insecta;Hymenoptera;;;                2759;6656;50557;7399;;;
1  1973489  Bacteria;Firmicutes;Bacilli;Bacillales;Bacilla...  2;1239;91061;1385;186817;1386;1973489
>>> result = pytaxonkit.lineage(['1382510', '929505', '390333'], formatstr='{f};{g};{s};{S}')
>>> result['Lineage'].iloc[2]
'Lactobacillaceae;Lactobacillus;Lactobacillus delbrueckii;Lactobacillus delbrueckii subsp. bulgaricus'

name

>>> import pytaxonkit
>>> pytaxonkit.name(['274127', 511170])
    TaxID        Name
0  274127   Distathma
1  511170  Delicatula

list

>>> import pytaxonkit
>>> result = pytaxonkit.list([13685, 9903])
>>> for taxon, tree in result:
...     subtaxa = [t for t in tree.traverse]
...     print(f'Top level result: {taxon.name} ({taxon.taxid}); {len(subtaxa)} related taxa')
...
Top level result: Solenopsis (13685); 293 related taxa
Top level result: Bos (9903); 29 related taxa
>>> subtaxa[0]
BasicTaxon(taxid=9904, rank='species', name='Bos gaurus')
>>> pytaxonkit.list([9605], raw=True)
{'9605 [genus] Homo': {'9606 [species] Homo sapiens': {'63221 [subspecies] Homo sapiens neanderthalensis': {}, "741158 [subspecies] Homo sapiens subsp. 'Denisova'": {}}, '1425170 [species] Homo heidelbergensis': {}, '2665952 [no rank] environmental samples': {'2665953 [species] Homo sapiens environmental sample': {}}}}

filter

>>> import pytaxonkit
>>> taxids = [131567, 2759, 33154, 33208, 6072, 33213, 33317, 1206794, 88770, 6656, 197563, 197562, 6960, 50557, 85512, 7496, 33340, 33392, 85604, 7088]
>>> result = pytaxonkit.filter(taxids, equal_to='phylum', higher_than='phylum')
>>> pytaxonkit.name(result)
   TaxID        Name
0   2759   Eukaryota
1  33208     Metazoa
2   6656  Arthropoda
>>> taxids = [131567, 2759, 33154, 33208, 6072, 33213, 33317, 1206794, 88770, 6656, 197563, 197562, 6960, 50557, 85512, 7496, 33340, 33342, 7524]
>>> result = pytaxonkit.filter(taxids, lower_than='phylum', discard_norank=True)
>>> pytaxonkit.name(result)
   TaxID          Name
0   6960      Hexapoda
1  50557       Insecta
2   7496     Pterygota
3  33340      Neoptera
4  33342  Paraneoptera
5   7524     Hemiptera

lca

>>> import pytaxonkit
>>> taxids = pytaxonkit.name2taxid(['Polistes metricus', 'Nasonia vitripennis'])
>>> taxids
                  Name  TaxID     Rank
0    Polistes metricus  91422  species
1  Nasonia vitripennis   7425  species
>>> ancestor = pytaxonkit.lca(taxids.TaxID)
>>> pytaxonkit.name([ancestor])
   TaxID      Name
0   7400  Apocrita

version

>>> import pytaxonkit
>>> pytaxonkit.__version__
'0.7.2'
>>> pytaxonkit.__taxonkitversion__
'taxonkit v0.7.2'

License

BSD 3-clause