[英]python ete2 TreeNode check if it has attribute
I have a tree t which some of its nodes has an attribute 'a' I want to test if a given node has this attribute, what I did is 我有一棵树,它的某些节点具有属性“ a”,我想测试给定节点是否具有此属性,我所做的是
if not n.a:
print "no a "
but I'm getting an error treenode n has no attribute a 但我遇到一个错误treenode n没有属性a
Any way to test it ? 有什么测试方法吗?
You could just use the generic pythonic way 您可以使用通用的pythonic方式
if not hasattr(node, "a"):
print "a attribute not found in node:", node
If "a" is registered as a regular feature in your ETE tree , you could also use the following approach: 如果在您的ETE树中将“ a”注册为常规功能,则也可以使用以下方法:
from ete2 import Tree
t = Tree()
t.populate(5)
t.children[0].add_features(a = "My annotation")
for node in t.traverse():
if "a" in node.features:
print node.get_ascii(attributes=["a", "name"])
which would print something like this: 它将打印出这样的内容:
/-aaaaaaaaac
-My annotation, NoName
| /-aaaaaaaaad
\NoName
\-aaaaaaaaae
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