NcbiTaxonomyTree

Builds the following dictionnary from NCBI taxonomy nodes.dmp and names.dmp files

 { Taxid    namedtuple('Node', ['name', 'rank', 'parent', 'children'] }

• https://www.biostars.org/p/13452/
• https://pythonhosted.org/ete2/tutorial/tutorial_ncbitaxonomy.html

Builds the following dictionnary from NCBI taxonomy nodes.dmp and names.dmp files

 { Taxid    namedtuple('Node', ['name', 'rank', 'parent', 'children'] }

• https://www.biostars.org/p/13452/
• https://pythonhosted.org/ete2/tutorial/tutorial_ncbitaxonomy.html

get parent node of current node its taxid

Returns parent id

获取所给定的taxid的分类等级列表

使用这个函数得到物种的具体分类，返回来的数据是从小到大排列的

请注意：返回来的数据是从小到大排列的

目标物种在NCBI taxonomy物种分类树上的分类路径节点向量

使用这个函数得到物种的具体分类，返回来的数据是从小到大排列的

Returns all the descendant taxids from a branch/clade of a list of taxids : all nodes (leaves or not) of the tree are returned including the original one.

Returns the ordered list of the descendants with their respective ranks and names for a LIST of taxids.

Returns all the descendant taxids that are leaves of the tree from a branch/clade determined by ONE taxid.

Returns all the descendant taxids that are leaves of the tree from a branch/clade determined by ONE taxid.

Returns all the taxids that are at a specified rank:

• standard ranks: species, genus, family, order, class, phylum, superkingdom.
• non-standard ranks: forma, varietas, subspecies, species group, subtribe, tribe, subclass, kingdom.

Prefix (Preorder) visit of the tree: https://en.wikipedia.org/wiki/Tree_traversal

 >>> flatten([1 , [2, 2], [2, [3, 3, 3]]]) 
 [1, 2, 2, 2, 3, 3, 3]