__init__(node[, children]) |
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append(v) |
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chomsky_normal_form([factor, horzMarkov, ...]) |
This method can modify a tree in three ways: |
collapse_unary([collapsePOS, collapseRoot, ...]) |
Collapse subtrees with a single child (ie. |
convert(val) |
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copy([deep]) |
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count(...) |
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draw() |
Open a new window containing a graphical diagram of this tree. |
extend(v) |
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flatten() |
Return a flat version of the tree, with all non-root non-terminals removed. |
freeze([leaf_freezer]) |
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fromstring(s[, brackets, read_node, ...]) |
Read a bracketed tree string and return the resulting tree. |
height() |
Return the height of the tree. |
index((value, [start, ...) |
Raises ValueError if the value is not present. |
insert |
L.insert(index, object) – insert object before index |
label() |
Return the node label of the tree. |
leaf_treeposition(index) |
| return: | The tree position of the index-th leaf in this |
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leaves() |
Return the leaves of the tree. |
logprob() |
Return log(p), where p is the probability associated with this object. |
pformat([margin, indent, nodesep, parens, ...]) |
| return: | A pretty-printed string representation of this tree. |
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pformat_latex_qtree() |
Returns a representation of the tree compatible with the LaTeX qtree package. |
pop([v]) |
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pos() |
Return a sequence of pos-tagged words extracted from the tree. |
pprint(**kwargs) |
Print a string representation of this Tree to ‘stream’ |
pretty_print([sentence, highlight, stream]) |
Pretty-print this tree as ASCII or Unicode art. |
prob() |
Return the probability associated with this object. |
productions() |
Generate the productions that correspond to the non-terminal nodes of the tree. |
remove(v) |
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reverse() |
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set_label(value) |
Set the node label. |
set_logprob(logprob) |
Set the log probability associated with this object to logprob. |
set_prob(prob) |
Set the probability associated with this object to prob. |
sort() |
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subtrees([filter]) |
Generate all the subtrees of this tree, optionally restricted to trees matching the filter function. |
treeposition_spanning_leaves(start, end) |
| return: | The tree position of the lowest descendant of this |
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treepositions([order]) |
>>> t = Tree.fromstring("(S (NP (D the) (N dog)) (VP (V chased) (NP (D the) (N cat))))")
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un_chomsky_normal_form([expandUnary, ...]) |
This method modifies the tree in three ways: |
unicode_repr() |
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