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limit depth of pretty

This commit is contained in:
Will McGugan 2022-01-05 15:54:06 +00:00
parent 22989e4212
commit a941e3a563
1 changed files with 109 additions and 76 deletions
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55
rich/pretty.py
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@ -196,6 +196,7 @@ class Pretty(JupyterMixin):
max_length (int, optional): Maximum length of containers before abbreviating, or None for no abbreviation.
Defaults to None.
max_string (int, optional): Maximum length of string before truncating, or None to disable. Defaults to None.
max_depth (int, optional): Maximum depth of nested data structures, or None for no maximum. Defaults to None.
expand_all (bool, optional): Expand all containers. Defaults to False.
margin (int, optional): Subtrace a margin from width to force containers to expand earlier. Defaults to 0.
insert_line (bool, optional): Insert a new line if the output has multiple new lines. Defaults to False.
@ -213,6 +214,7 @@ class Pretty(JupyterMixin):
indent_guides: bool = False,
max_length: Optional[int] = None,
max_string: Optional[int] = None,
max_depth: Optional[int] = None,
expand_all: bool = False,
margin: int = 0,
insert_line: bool = False,
@ -226,6 +228,7 @@ class Pretty(JupyterMixin):
self.indent_guides = indent_guides
self.max_length = max_length
self.max_string = max_string
self.max_depth = max_depth
self.expand_all = expand_all
self.margin = margin
self.insert_line = insert_line
@ -239,6 +242,7 @@ class Pretty(JupyterMixin):
indent_size=self.indent_size,
max_length=self.max_length,
max_string=self.max_string,
max_depth=self.max_depth,
expand_all=self.expand_all,
)
pretty_text = Text(
@ -474,7 +478,10 @@ class _Line:
def traverse(
_object: Any, max_length: Optional[int] = None, max_string: Optional[int] = None
_object: Any,
max_length: Optional[int] = None,
max_string: Optional[int] = None,
max_depth: Optional[int] = None,
) -> Node:
"""Traverse object and generate a tree.
@ -484,6 +491,8 @@ def traverse(
Defaults to None.
max_string (int, optional): Maximum length of string before truncating, or None to disable truncating.
Defaults to None.
max_depth (int, optional): Maximum depth of data structures, or None for no maximum.
Defaults to None.
Returns:
Node: The root of a tree structure which can be used to render a pretty repr.
@ -509,11 +518,13 @@ def traverse(
push_visited = visited_ids.add
pop_visited = visited_ids.remove
def _traverse(obj: Any, root: bool = False) -> Node:
def _traverse(obj: Any, root: bool = False, depth: int = 0) -> Node:
"""Walk the object depth first."""
obj_type = type(obj)
py_version = (sys.version_info.major, sys.version_info.minor)
children: List[Node]
reached_max_depth = max_depth is not None and depth >= max_depth
def iter_rich_args(rich_args: Any) -> Iterable[Union[Any, Tuple[str, Any]]]:
for arg in rich_args:
@ -554,6 +565,10 @@ def traverse(
if args:
children = []
append = children.append
if reached_max_depth:
node = Node(value_repr=f"...")
else:
if angular:
node = Node(
open_brace=f"<{class_name} ",
@ -572,13 +587,13 @@ def traverse(
for last, arg in loop_last(args):
if isinstance(arg, tuple):
key, child = arg
child_node = _traverse(child)
child_node = _traverse(child, depth=depth + 1)
child_node.last = last
child_node.key_repr = key
child_node.key_separator = "="
append(child_node)
else:
child_node = _traverse(arg)
child_node = _traverse(arg, depth=depth + 1)
child_node.last = last
append(child_node)
else:
@ -593,6 +608,9 @@ def traverse(
attr_fields = _get_attr_fields(obj)
if attr_fields:
if reached_max_depth:
node = Node(value_repr=f"...")
else:
node = Node(
open_brace=f"{obj.__class__.__name__}(",
close_brace=")",
@ -622,7 +640,7 @@ def traverse(
if repr_callable:
child_node = Node(value_repr=str(repr_callable(value)))
else:
child_node = _traverse(value)
child_node = _traverse(value, depth=depth + 1)
child_node.last = last
child_node.key_repr = name
child_node.key_separator = "="
@ -646,6 +664,9 @@ def traverse(
children = []
append = children.append
if reached_max_depth:
node = Node(value_repr=f"...")
else:
node = Node(
open_brace=f"{obj.__class__.__name__}(",
close_brace=")",
@ -653,8 +674,10 @@ def traverse(
last=root,
)
for last, field in loop_last(field for field in fields(obj) if field.repr):
child_node = _traverse(getattr(obj, field.name))
for last, field in loop_last(
field for field in fields(obj) if field.repr
):
child_node = _traverse(getattr(obj, field.name), depth=depth + 1)
child_node.key_repr = field.name
child_node.last = last
child_node.key_separator = "="
@ -676,7 +699,9 @@ def traverse(
open_brace, close_brace, empty = _BRACES[obj_type](obj)
if obj_type.__repr__ != type(obj).__repr__:
if reached_max_depth:
node = Node(value_repr=f"...", last=root)
elif obj_type.__repr__ != type(obj).__repr__:
node = Node(value_repr=to_repr(obj), last=root)
elif obj:
children = []
@ -695,7 +720,7 @@ def traverse(
if max_length is not None:
iter_items = islice(iter_items, max_length)
for index, (key, child) in enumerate(iter_items):
child_node = _traverse(child)
child_node = _traverse(child, depth=depth + 1)
child_node.key_repr = to_repr(key)
child_node.last = index == last_item_index
append(child_node)
@ -704,7 +729,7 @@ def traverse(
if max_length is not None:
iter_values = islice(iter_values, max_length)
for index, child in enumerate(iter_values):
child_node = _traverse(child)
child_node = _traverse(child, depth=depth + 1)
child_node.last = index == last_item_index
append(child_node)
if max_length is not None and num_items > max_length:
@ -729,6 +754,7 @@ def pretty_repr(
indent_size: int = 4,
max_length: Optional[int] = None,
max_string: Optional[int] = None,
max_depth: Optional[int] = None,
expand_all: bool = False,
) -> str:
"""Prettify repr string by expanding on to new lines to fit within a given width.
@ -741,6 +767,8 @@ def pretty_repr(
Defaults to None.
max_string (int, optional): Maximum length of string before truncating, or None to disable truncating.
Defaults to None.
max_depth (int, optional): Maximum depth of nested data structure, or None for no depth.
Defaults to None.
expand_all (bool, optional): Expand all containers regardless of available width. Defaults to False.
Returns:
@ -750,7 +778,9 @@ def pretty_repr(
if isinstance(_object, Node):
node = _object
else:
node = traverse(_object, max_length=max_length, max_string=max_string)
node = traverse(
_object, max_length=max_length, max_string=max_string, max_depth=max_depth
)
repr_str = node.render(
max_width=max_width, indent_size=indent_size, expand_all=expand_all
)
@ -764,6 +794,7 @@ def pprint(
indent_guides: bool = True,
max_length: Optional[int] = None,
max_string: Optional[int] = None,
max_depth: Optional[int] = None,
expand_all: bool = False,
) -> None:
"""A convenience function for pretty printing.
@ -774,6 +805,7 @@ def pprint(
max_length (int, optional): Maximum length of containers before abbreviating, or None for no abbreviation.
Defaults to None.
max_string (int, optional): Maximum length of strings before truncating, or None to disable. Defaults to None.
max_depth (int, optional): Maximum depth for nested data structures, or None for no maximum. Defaults to None.
indent_guides (bool, optional): Enable indentation guides. Defaults to True.
expand_all (bool, optional): Expand all containers. Defaults to False.
"""
@ -783,6 +815,7 @@ def pprint(
_object,
max_length=max_length,
max_string=max_string,
max_depth=max_depth,
indent_guides=indent_guides,
expand_all=expand_all,
overflow="ignore",