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from ete3 import Tree
#Loads a tree
t = Tree( '((H:1,I:1):0.5, A:1, (B:1,(C:1,D:1):0.5):0.5);' )
print t
# /-H
# /--------|
# | \-I
# |
#---------|--A
# |
# | /-B
# \--------|
# | /-C
# \--------|
# \-D
# I get D
D = t.search_nodes(name="D")
# I get all nodes with distance=0.5
nodes = t.search_nodes(dist=0.5)
print len(nodes), "nodes have distance=0.5"
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