qalgebra.printing.treeprinting module

Tree printer for Expressions

This is mainly for interactive use.

Summary

Functions:

print_tree	Print a tree representation of the structure of expr
tree	Give the output of tree as a multiline string, using line drawings to visualize the hierarchy of expressions (similar to the tree unix command line program for showing directory trees)

Reference

qalgebra.printing.treeprinting.print_tree(expr, attr='operands', padding='', exclude_type=None, depth=None, unicode=True, srepr_leaves=False, _last=False, _root=True, _level=0, _print=True)

Print a tree representation of the structure of expr

Parameters

• expr (Expression) – expression to render

• attr (str) – The attribute from which to get the children of expr

• padding (str) – Whitespace by which the entire tree is idented

• exclude_type (type) – Type (or list of types) which should never be expanded recursively

• depth (int or None) – Maximum depth of the tree to be printed

• unicode (bool) – If True, use unicode line-drawing symbols for the tree, and print expressions in a unicode representation. If False, use an ASCII approximation.

• srepr_leaves (bool) – Whether or not to render leaves with srepr, instead of ascii/unicode

See also

tree() return the result as a string, instead of printing it

qalgebra.printing.treeprinting.tree(expr, **kwargs)

Give the output of tree as a multiline string, using line drawings to visualize the hierarchy of expressions (similar to the tree unix command line program for showing directory trees)

See also

qalgebra.printing.srepr() with indented=True produces a similar tree-like rendering of the given expression that can be re-evaluated to the original expression.