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# Author: Fred L. Drake, Jr.
# fdrake@acm.org
#
# This is a simple little module I wrote to make life easier. I didn't
# see anything quite like it in the library, though I may have overlooked
# something. I wrote this when I was trying to read some heavily nested
# tuples with fairly non-descriptive content. This is modeled very much
# after Lisp/Scheme - style pretty-printing of lists. If you find it
# useful, thank small children who sleep at night.
"""Support to pretty-print lists, tuples, & dictionaries recursively.
Very simple, but useful, especially in debugging data structures.
Classes
-------
PrettyPrinter()
Handle pretty-printing operations onto a stream using a configured
set of formatting parameters.
Functions
---------
pformat()
Format a Python object into a pretty-printed representation.
pprint()
Pretty-print a Python object to a stream [default is sys.stdout].
saferepr()
Generate a 'standard' repr()-like value, but protect against recursive
data structures.
"""
import
collections
as
_collections
import
sys
as
_sys
import
types
as
_types
from
io
import
StringIO
as
_StringIO
__all__
=
[
"pprint"
,
"pformat"
,
"isreadable"
,
"isrecursive"
,
"saferepr"
,
"PrettyPrinter"
,
"pp"
]
def
pprint
(
object
,
stream
=
None
,
indent
=
1
,
width
=
80
,
depth
=
None
,
*
,
compact
=
False
,
expand
=
False
,
sort_dicts
=
True
,
underscore_numbers
=
False
):
"""Pretty-print a Python object to a stream [default is sys.stdout]."""
printer
=
PrettyPrinter
(
stream
=
stream
,
indent
=
indent
,
width
=
width
,
depth
=
depth
,
compact
=
compact
,
expand
=
expand
,
sort_dicts
=
sort_dicts
,
underscore_numbers
=
underscore_numbers
)
printer
.
pprint
(
object
)
def
pformat
(
object
,
indent
=
1
,
width
=
80
,
depth
=
None
,
*
,
compact
=
False
,
expand
=
False
,
sort_dicts
=
True
,
underscore_numbers
=
False
):
"""Format a Python object into a pretty-printed representation."""
return
PrettyPrinter
(
indent
=
indent
,
width
=
width
,
depth
=
depth
,
compact
=
compact
,
expand
=
expand
,
sort_dicts
=
sort_dicts
,
underscore_numbers
=
underscore_numbers
).
pformat
(
object
)
def
pp
(
object
,
*
args
,
sort_dicts
=
False
,
**
kwargs
):
"""Pretty-print a Python object"""
pprint
(
object
,
*
args
,
sort_dicts
=
sort_dicts
,
**
kwargs
)
def
saferepr
(
object
):
"""Version of repr() which can handle recursive data structures."""
return
PrettyPrinter
().
_safe_repr
(
object
, {},
None
,
0
)[
0
]
def
isreadable
(
object
):
"""Determine if saferepr(object) is readable by eval()."""
return
PrettyPrinter
().
_safe_repr
(
object
, {},
None
,
0
)[
1
]
def
isrecursive
(
object
):
"""Determine if object requires a recursive representation."""
return
PrettyPrinter
().
_safe_repr
(
object
, {},
None
,
0
)[
2
]
class
_safe_key
:
"""Helper function for key functions when sorting unorderable objects.
The wrapped-object will fallback to a Py2.x style comparison for
unorderable types (sorting first comparing the type name and then by
the obj ids). Does not work recursively, so dict.items() must have
_safe_key applied to both the key and the value.
"""
__slots__
=
[
'obj'
]
def
__init__
(
self
,
obj
):
self
.
obj
=
obj
def
__lt__
(
self
,
other
):
try
:
return
self
.
obj
<
other
.
obj
except
TypeError
:
return
((
str
(
type
(
self
.
obj
)),
id
(
self
.
obj
))
<
\
(
str
(
type
(
other
.
obj
)),
id
(
other
.
obj
)))
def
_safe_tuple
(
t
):
"Helper function for comparing 2-tuples"
return
_safe_key
(
t
[
0
]),
_safe_key
(
t
[
1
])
class
PrettyPrinter
:
def
__init__
(
self
,
indent
=
1
,
width
=
80
,
depth
=
None
,
stream
=
None
,
*
,
compact
=
False
,
expand
=
False
,
sort_dicts
=
True
,
underscore_numbers
=
False
):
"""Handle pretty printing operations onto a stream using a set of
configured parameters.
indent
Number of spaces to indent for each level of nesting.
width
Attempted maximum number of columns in the output.
depth
The maximum depth to print out nested structures.
stream
The desired output stream. If omitted (or false), the standard
output stream available at construction will be used.
compact
If true, several items will be combined in one line.
Incompatible with expand mode.
expand
If true, the output will be formatted similar to
pretty-printed json.dumps() when ``indent`` is supplied.
Incompatible with compact mode.
sort_dicts
If true, dict keys are sorted.
underscore_numbers
If true, digit groups are separated with underscores.
"""
indent
=
int
(
indent
)
width
=
int
(
width
)
if
indent
<
0
:
raise
ValueError
(
'indent must be >= 0'
)
if
depth
is
not
None
and
depth
<=
0
:
raise
ValueError
(
'depth must be > 0'
)
if
not
width
:
raise
ValueError
(
'width must be != 0'
)
if
compact
and
expand
:
raise
ValueError
(
'compact and expand are incompatible'
)
self
.
_depth
=
depth
self
.
_indent_per_level
=
indent
self
.
_width
=
width
if
stream
is
not
None
:
self
.
_stream
=
stream
else
:
self
.
_stream
=
_sys
.
stdout
self
.
_compact
=
bool
(
compact
)
self
.
_expand
=
bool
(
expand
)
self
.
_sort_dicts
=
sort_dicts
self
.
_underscore_numbers
=
underscore_numbers
def
pprint
(
self
,
object
):
if
self
.
_stream
is
not
None
:
self
.
_format
(
object
,
self
.
_stream
,
0
,
0
, {},
0
)
self
.
_stream
.
write
(
"
\n
"
)
def
pformat
(
self
,
object
):
sio
=
_StringIO
()
self
.
_format
(
object
,
sio
,
0
,
0
, {},
0
)
return
sio
.
getvalue
()
def
isrecursive
(
self
,
object
):
return
self
.
format
(
object
, {},
0
,
0
)[
2
]
def
isreadable
(
self
,
object
):
s
,
readable
,
recursive
=
self
.
format
(
object
, {},
0
,
0
)
return
readable
and
not
recursive
def
_format
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
# Width of any "key: " prefix already written on the current line by
# _format_child(). In expand mode `indent` is the block indent and so
# does not include it, but it still consumes width here.
prefix_len
=
self
.
_pending_prefix_len
self
.
_pending_prefix_len
=
0
objid
=
id
(
object
)
if
objid
in
context
:
stream
.
write
(
_recursion
(
object
))
self
.
_recursive
=
True
self
.
_readable
=
False
return
rep
=
self
.
_repr
(
object
,
context
,
level
)
max_width
=
self
.
_width
-
indent
-
prefix_len
-
allowance
if
len
(
rep
)
>
max_width
:
p
=
self
.
_dispatch
.
get
(
type
(
object
).
__repr__
,
None
)
# Lazy import to improve module import time
from
dataclasses
import
is_dataclass
if
p
is
not
None
:
context
[
objid
]
=
1
p
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
+
1
)
del
context
[
objid
]
return
elif
(
is_dataclass
(
object
)
and
not
isinstance
(
object
,
type
)
and
object
.
__dataclass_params__
.
repr
and
# Check dataclass has generated repr method.
hasattr
(
object
.
__repr__
,
"__wrapped__"
)
and
"__create_fn__"
in
object
.
__repr__
.
__wrapped__
.
__qualname__
):
context
[
objid
]
=
1
self
.
_pprint_dataclass
(
object
,
stream
,
indent
,
allowance
,
context
,
level
+
1
)
del
context
[
objid
]
return
stream
.
write
(
rep
)
def
_format_block_start
(
self
,
start_str
,
indent
):
if
self
.
_expand
:
return
f"
{
start_str
}
\n
{
' '
*
indent
}
"
return
start_str
def
_format_block_end
(
self
,
end_str
,
indent
):
if
self
.
_expand
:
return
f"
\n
{
' '
*
indent
}
{
end_str
}
"
return
end_str
def
_child_indent
(
self
,
indent
,
prefix_len
):
if
self
.
_expand
:
return
indent
return
indent
+
prefix_len
# Set by _format_child() immediately before it calls _format(), and
# consumed there. Passing it out of band keeps _format()'s signature
# unchanged for third-party subclasses that override it.
_pending_prefix_len
=
0
def
_format_child
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
,
prefix_len
):
if
self
.
_expand
:
# Aligned mode folds the prefix into the indent (see
# _child_indent), so only expand mode needs to report it.
self
.
_pending_prefix_len
=
prefix_len
try
:
self
.
_format
(
object
,
stream
,
indent
,
allowance
,
context
,
level
)
finally
:
self
.
_pending_prefix_len
=
0
def
_write_indent_padding
(
self
,
write
):
if
self
.
_expand
:
if
self
.
_indent_per_level
>
0
:
write
(
self
.
_indent_per_level
*
" "
)
elif
self
.
_indent_per_level
>
1
:
write
((
self
.
_indent_per_level
-
1
)
*
" "
)
def
_pprint_dataclass
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
# Lazy import to improve module import time
from
dataclasses
import
fields
as
dataclass_fields
cls_name
=
object
.
__class__
.
__name__
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
else
:
indent
+=
len
(
cls_name
)
+
1
items
=
[(
f
.
name
,
getattr
(
object
,
f
.
name
))
for
f
in
dataclass_fields
(
object
)
if
f
.
repr
]
stream
.
write
(
self
.
_format_block_start
(
cls_name
+
'('
,
indent
))
self
.
_format_namespace_items
(
items
,
stream
,
indent
,
allowance
,
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
')'
,
indent
-
self
.
_indent_per_level
))
_dispatch
=
{}
def
_pprint_dict
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
write
(
self
.
_format_block_start
(
'{'
,
indent
))
self
.
_write_indent_padding
(
write
)
length
=
len
(
object
)
if
length
:
if
self
.
_sort_dicts
:
items
=
sorted
(
object
.
items
(),
key
=
_safe_tuple
)
else
:
items
=
object
.
items
()
self
.
_format_dict_items
(
items
,
stream
,
indent
,
allowance
+
1
,
context
,
level
)
write
(
self
.
_format_block_end
(
'}'
,
indent
))
_dispatch
[
dict
.
__repr__
]
=
_pprint_dict
def
_pprint_frozendict
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
cls
=
object
.
__class__
if
not
len
(
object
):
write
(
repr
(
object
))
return
write
(
self
.
_format_block_start
(
cls
.
__name__
+
"({"
,
indent
))
self
.
_write_indent_padding
(
write
)
if
self
.
_sort_dicts
:
items
=
sorted
(
object
.
items
(),
key
=
_safe_tuple
)
else
:
items
=
object
.
items
()
self
.
_format_dict_items
(
items
,
stream
,
self
.
_child_indent
(
indent
,
len
(
cls
.
__name__
)
+
1
),
allowance
+
2
,
context
,
level
,
)
write
(
self
.
_format_block_end
(
"})"
,
indent
))
_dispatch
[
frozendict
.
__repr__
]
=
_pprint_frozendict
def
_pprint_ordered_dict
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
not
len
(
object
):
stream
.
write
(
repr
(
object
))
return
cls
=
object
.
__class__
stream
.
write
(
cls
.
__name__
+
'('
)
self
.
_format_child
(
list
(
object
.
items
()),
stream
,
self
.
_child_indent
(
indent
,
len
(
cls
.
__name__
)
+
1
),
allowance
+
1
,
context
,
level
,
len
(
cls
.
__name__
)
+
1
,
)
stream
.
write
(
')'
)
_dispatch
[
_collections
.
OrderedDict
.
__repr__
]
=
_pprint_ordered_dict
def
_pprint_dict_view
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
"""Pretty print dict views (keys, values, items)."""
if
isinstance
(
object
,
self
.
_dict_items_view
):
key
=
_safe_tuple
else
:
key
=
_safe_key
write
=
stream
.
write
write
(
self
.
_format_block_start
(
object
.
__class__
.
__name__
+
"(["
,
indent
)
)
if
len
(
object
):
if
self
.
_sort_dicts
:
entries
=
sorted
(
object
,
key
=
key
)
else
:
entries
=
object
self
.
_format_items
(
entries
,
stream
,
indent
,
allowance
+
2
,
context
,
level
)
write
(
self
.
_format_block_end
(
"])"
,
indent
))
def
_pprint_mapping_abc_view
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
"""Pretty print mapping views from collections.abc."""
write
=
stream
.
write
write
(
object
.
__class__
.
__name__
+
'('
)
# Dispatch formatting to the view's _mapping
self
.
_format
(
object
.
_mapping
,
stream
,
indent
,
allowance
,
context
,
level
)
write
(
')'
)
_dict_keys_view
=
type
({}.
keys
())
_dispatch
[
_dict_keys_view
.
__repr__
]
=
_pprint_dict_view
_dict_values_view
=
type
({}.
values
())
_dispatch
[
_dict_values_view
.
__repr__
]
=
_pprint_dict_view
_dict_items_view
=
type
({}.
items
())
_dispatch
[
_dict_items_view
.
__repr__
]
=
_pprint_dict_view
_dispatch
[
_collections
.
abc
.
MappingView
.
__repr__
]
=
_pprint_mapping_abc_view
_view_reprs
=
{
cls
.
__repr__
for
cls
in
(
_dict_keys_view
,
_dict_values_view
,
_dict_items_view
,
_collections
.
abc
.
MappingView
)}
def
_pprint_list
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
stream
.
write
(
self
.
_format_block_start
(
'['
,
indent
))
self
.
_format_items
(
object
,
stream
,
indent
,
allowance
+
1
,
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
']'
,
indent
))
_dispatch
[
list
.
__repr__
]
=
_pprint_list
def
_pprint_tuple
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
stream
.
write
(
self
.
_format_block_start
(
'('
,
indent
))
if
len
(
object
)
==
1
and
not
self
.
_expand
:
endchar
=
',)'
else
:
endchar
=
')'
self
.
_format_items
(
object
,
stream
,
indent
,
allowance
+
len
(
endchar
),
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
endchar
,
indent
))
_dispatch
[
tuple
.
__repr__
]
=
_pprint_tuple
def
_pprint_set
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
not
len
(
object
):
stream
.
write
(
repr
(
object
))
return
typ
=
object
.
__class__
if
typ
is
set
:
stream
.
write
(
self
.
_format_block_start
(
'{'
,
indent
))
endchar
=
'}'
else
:
stream
.
write
(
self
.
_format_block_start
(
typ
.
__name__
+
'({'
,
indent
))
endchar
=
'})'
if
not
self
.
_expand
:
indent
+=
len
(
typ
.
__name__
)
+
1
object
=
sorted
(
object
,
key
=
_safe_key
)
self
.
_format_items
(
object
,
stream
,
indent
,
allowance
+
len
(
endchar
),
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
endchar
,
indent
))
_dispatch
[
set
.
__repr__
]
=
_pprint_set
_dispatch
[
frozenset
.
__repr__
]
=
_pprint_set
def
_pprint_str
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
if
not
len
(
object
):
write
(
repr
(
object
))
return
chunks
=
[]
lines
=
object
.
splitlines
(
True
)
if
level
==
1
:
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
else
:
indent
+=
1
allowance
+=
1
max_width1
=
max_width
=
self
.
_width
-
indent
for
i
,
line
in
enumerate
(
lines
):
rep
=
repr
(
line
)
if
i
==
len
(
lines
)
-
1
:
max_width1
-=
allowance
if
len
(
rep
)
<=
max_width1
:
chunks
.
append
(
rep
)
else
:
# Lazy import to improve module import time
import
re
# A list of alternating (non-space, space) strings
parts
=
re
.
findall
(
r'\S*\s*'
,
line
)
assert
parts
assert
not
parts
[
-
1
]
parts
.
pop
()
# drop empty last part
max_width2
=
max_width
current
=
''
for
j
,
part
in
enumerate
(
parts
):
candidate
=
current
+
part
if
j
==
len
(
parts
)
-
1
and
i
==
len
(
lines
)
-
1
:
max_width2
-=
allowance
if
len
(
repr
(
candidate
))
>
max_width2
:
if
current
:
chunks
.
append
(
repr
(
current
))
current
=
part
else
:
current
=
candidate
if
current
:
chunks
.
append
(
repr
(
current
))
if
len
(
chunks
)
==
1
:
write
(
rep
)
return
if
level
==
1
:
write
(
self
.
_format_block_start
(
"("
,
indent
))
for
i
,
rep
in
enumerate
(
chunks
):
if
i
>
0
:
write
(
'
\n
'
+
' '
*
indent
)
write
(
rep
)
if
level
==
1
:
write
(
self
.
_format_block_end
(
")"
,
indent
-
self
.
_indent_per_level
))
_dispatch
[
str
.
__repr__
]
=
_pprint_str
def
_pprint_bytes
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
if
len
(
object
)
<=
4
:
write
(
repr
(
object
))
return
parens
=
level
==
1
if
parens
:
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
else
:
indent
+=
1
allowance
+=
1
write
(
self
.
_format_block_start
(
'('
,
indent
))
delim
=
''
for
rep
in
_wrap_bytes_repr
(
object
,
self
.
_width
-
indent
,
allowance
):
write
(
delim
)
write
(
rep
)
if
not
delim
:
delim
=
'
\n
'
+
' '
*
indent
if
parens
:
write
(
self
.
_format_block_end
(
')'
,
indent
-
self
.
_indent_per_level
))
_dispatch
[
bytes
.
__repr__
]
=
_pprint_bytes
def
_pprint_bytearray
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
write
(
self
.
_format_block_start
(
'bytearray('
,
indent
))
if
self
.
_expand
:
write
(
' '
*
self
.
_indent_per_level
)
recursive_indent
=
indent
+
self
.
_indent_per_level
else
:
recursive_indent
=
indent
+
10
self
.
_pprint_bytes
(
bytes
(
object
),
stream
,
recursive_indent
,
allowance
+
1
,
context
,
level
+
1
)
write
(
self
.
_format_block_end
(
')'
,
indent
))
_dispatch
[
bytearray
.
__repr__
]
=
_pprint_bytearray
def
_pprint_mappingproxy
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
stream
.
write
(
'mappingproxy('
)
self
.
_format_child
(
object
.
copy
(),
stream
,
self
.
_child_indent
(
indent
,
13
),
allowance
+
1
,
context
,
level
,
13
,
)
stream
.
write
(
')'
)
_dispatch
[
_types
.
MappingProxyType
.
__repr__
]
=
_pprint_mappingproxy
def
_pprint_simplenamespace
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
type
(
object
)
is
_types
.
SimpleNamespace
:
# The SimpleNamespace repr is "namespace" instead of the class
# name, so we do the same here. For subclasses; use the class name.
cls_name
=
'namespace'
else
:
cls_name
=
object
.
__class__
.
__name__
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
else
:
indent
+=
len
(
cls_name
)
+
1
items
=
object
.
__dict__
.
items
()
stream
.
write
(
self
.
_format_block_start
(
cls_name
+
'('
,
indent
))
self
.
_format_namespace_items
(
items
,
stream
,
indent
,
allowance
,
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
')'
,
indent
-
self
.
_indent_per_level
))
_dispatch
[
_types
.
SimpleNamespace
.
__repr__
]
=
_pprint_simplenamespace
def
_format_dict_items
(
self
,
items
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
indent
+=
self
.
_indent_per_level
delimnl
=
',
\n
'
+
' '
*
indent
last_index
=
len
(
items
)
-
1
for
i
, (
key
,
ent
)
in
enumerate
(
items
):
last
=
i
==
last_index
rep
=
self
.
_repr
(
key
,
context
,
level
)
write
(
rep
)
write
(
': '
)
self
.
_format_child
(
ent
,
stream
,
self
.
_child_indent
(
indent
,
len
(
rep
)
+
2
),
allowance
if
last
else
1
,
context
,
level
,
len
(
rep
)
+
2
,
)
if
not
last
:
write
(
delimnl
)
elif
self
.
_expand
:
write
(
','
)
def
_format_namespace_items
(
self
,
items
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
delimnl
=
',
\n
'
+
' '
*
indent
last_index
=
len
(
items
)
-
1
for
i
, (
key
,
ent
)
in
enumerate
(
items
):
last
=
i
==
last_index
write
(
key
)
write
(
'='
)
if
id
(
ent
)
in
context
:
# Special-case representation of recursion to match standard
# recursive dataclass repr.
write
(
"..."
)
else
:
self
.
_format_child
(
ent
,
stream
,
self
.
_child_indent
(
indent
,
len
(
key
)
+
1
),
allowance
if
last
else
1
,
context
,
level
,
len
(
key
)
+
1
,
)
if
not
last
:
write
(
delimnl
)
elif
self
.
_expand
:
write
(
','
)
def
_format_items
(
self
,
items
,
stream
,
indent
,
allowance
,
context
,
level
):
write
=
stream
.
write
indent
+=
self
.
_indent_per_level
self
.
_write_indent_padding
(
write
)
delimnl
=
',
\n
'
+
' '
*
indent
delim
=
''
width
=
max_width
=
self
.
_width
-
indent
+
1
it
=
iter
(
items
)
try
:
next_ent
=
next
(
it
)
except
StopIteration
:
return
last
=
False
while
not
last
:
ent
=
next_ent
try
:
next_ent
=
next
(
it
)
except
StopIteration
:
last
=
True
max_width
-=
allowance
width
-=
allowance
if
self
.
_compact
:
rep
=
self
.
_repr
(
ent
,
context
,
level
)
w
=
len
(
rep
)
+
2
if
width
<
w
:
width
=
max_width
if
delim
:
delim
=
delimnl
if
width
>=
w
:
width
-=
w
write
(
delim
)
delim
=
', '
write
(
rep
)
continue
write
(
delim
)
delim
=
delimnl
self
.
_format
(
ent
,
stream
,
indent
,
allowance
if
last
else
1
,
context
,
level
)
if
last
and
self
.
_expand
:
write
(
','
)
def
_repr
(
self
,
object
,
context
,
level
):
repr
,
readable
,
recursive
=
self
.
format
(
object
,
context
.
copy
(),
self
.
_depth
,
level
)
if
not
readable
:
self
.
_readable
=
False
if
recursive
:
self
.
_recursive
=
True
return
repr
def
format
(
self
,
object
,
context
,
maxlevels
,
level
):
"""Format object for a specific context, returning a string
and flags indicating whether the representation is 'readable'
and whether the object represents a recursive construct.
"""
return
self
.
_safe_repr
(
object
,
context
,
maxlevels
,
level
)
def
_pprint_default_dict
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
not
len
(
object
):
stream
.
write
(
repr
(
object
))
return
rdf
=
self
.
_repr
(
object
.
default_factory
,
context
,
level
)
cls
=
object
.
__class__
if
self
.
_expand
:
stream
.
write
(
'%s(%s, '
%
(
cls
.
__name__
,
rdf
))
else
:
indent
+=
len
(
cls
.
__name__
)
+
1
stream
.
write
(
'%s(%s,
\n
%s'
%
(
cls
.
__name__
,
rdf
,
' '
*
indent
))
self
.
_pprint_dict
(
object
,
stream
,
indent
,
allowance
+
1
,
context
,
level
)
stream
.
write
(
')'
)
_dispatch
[
_collections
.
defaultdict
.
__repr__
]
=
_pprint_default_dict
def
_pprint_counter
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
not
len
(
object
):
stream
.
write
(
repr
(
object
))
return
cls
=
object
.
__class__
stream
.
write
(
self
.
_format_block_start
(
cls
.
__name__
+
'({'
,
indent
))
self
.
_write_indent_padding
(
stream
.
write
)
items
=
object
.
most_common
()
self
.
_format_dict_items
(
items
,
stream
,
self
.
_child_indent
(
indent
,
len
(
cls
.
__name__
)
+
1
),
allowance
+
2
,
context
,
level
,
)
stream
.
write
(
self
.
_format_block_end
(
'})'
,
indent
))
_dispatch
[
_collections
.
Counter
.
__repr__
]
=
_pprint_counter
def
_pprint_chain_map
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
not
len
(
object
.
maps
):
stream
.
write
(
repr
(
object
))
return
cls
=
object
.
__class__
stream
.
write
(
self
.
_format_block_start
(
cls
.
__name__
+
'('
,
indent
+
self
.
_indent_per_level
))
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
else
:
indent
+=
len
(
cls
.
__name__
)
+
1
for
i
,
m
in
enumerate
(
object
.
maps
):
if
i
==
len
(
object
.
maps
)
-
1
:
self
.
_format
(
m
,
stream
,
indent
,
allowance
+
1
,
context
,
level
)
if
self
.
_expand
:
stream
.
write
(
','
)
stream
.
write
(
self
.
_format_block_end
(
')'
,
indent
-
self
.
_indent_per_level
))
else
:
self
.
_format
(
m
,
stream
,
indent
,
1
,
context
,
level
)
stream
.
write
(
',
\n
'
+
' '
*
indent
)
_dispatch
[
_collections
.
ChainMap
.
__repr__
]
=
_pprint_chain_map
def
_pprint_deque
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
if
not
len
(
object
):
stream
.
write
(
repr
(
object
))
return
cls
=
object
.
__class__
stream
.
write
(
self
.
_format_block_start
(
cls
.
__name__
+
'(['
,
indent
))
if
not
self
.
_expand
:
indent
+=
len
(
cls
.
__name__
)
+
1
if
object
.
maxlen
is
None
:
self
.
_format_items
(
object
,
stream
,
indent
,
allowance
+
2
,
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
'])'
,
indent
))
else
:
self
.
_format_items
(
object
,
stream
,
indent
,
2
,
context
,
level
)
rml
=
self
.
_repr
(
object
.
maxlen
,
context
,
level
)
if
self
.
_expand
:
stream
.
write
(
'%s], maxlen=%s)'
%
(
'
\n
'
+
' '
*
indent
,
rml
))
else
:
stream
.
write
(
'],
\n
%smaxlen=%s)'
%
(
' '
*
indent
,
rml
))
_dispatch
[
_collections
.
deque
.
__repr__
]
=
_pprint_deque
def
_pprint_user_dict
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
self
.
_format
(
object
.
data
,
stream
,
indent
,
allowance
,
context
,
level
-
1
)
_dispatch
[
_collections
.
UserDict
.
__repr__
]
=
_pprint_user_dict
def
_pprint_user_list
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
self
.
_format
(
object
.
data
,
stream
,
indent
,
allowance
,
context
,
level
-
1
)
_dispatch
[
_collections
.
UserList
.
__repr__
]
=
_pprint_user_list
def
_pprint_user_string
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
self
.
_format
(
object
.
data
,
stream
,
indent
,
allowance
,
context
,
level
-
1
)
_dispatch
[
_collections
.
UserString
.
__repr__
]
=
_pprint_user_string
def
_pprint_template
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
cls_name
=
object
.
__class__
.
__name__
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
else
:
indent
+=
len
(
cls_name
)
+
1
items
=
(
(
"strings"
,
object
.
strings
),
(
"interpolations"
,
object
.
interpolations
),
)
stream
.
write
(
self
.
_format_block_start
(
cls_name
+
"("
,
indent
))
self
.
_format_namespace_items
(
items
,
stream
,
indent
,
allowance
,
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
")"
,
indent
-
self
.
_indent_per_level
)
)
def
_pprint_interpolation
(
self
,
object
,
stream
,
indent
,
allowance
,
context
,
level
):
cls_name
=
object
.
__class__
.
__name__
if
self
.
_expand
:
indent
+=
self
.
_indent_per_level
items
=
(
(
"value"
,
object
.
value
),
(
"expression"
,
object
.
expression
),
(
"conversion"
,
object
.
conversion
),
(
"format_spec"
,
object
.
format_spec
),
)
stream
.
write
(
self
.
_format_block_start
(
cls_name
+
"("
,
indent
))
self
.
_format_namespace_items
(
items
,
stream
,
indent
,
allowance
,
context
,
level
)
stream
.
write
(
self
.
_format_block_end
(
")"
,
indent
-
self
.
_indent_per_level
)
)
else
:
indent
+=
len
(
cls_name
)
items
=
(
object
.
value
,
object
.
expression
,
object
.
conversion
,
object
.
format_spec
,
)
stream
.
write
(
cls_name
+
"("
)
self
.
_format_items
(
items
,
stream
,
indent
,
allowance
,
context
,
level
)
stream
.
write
(
")"
)
t
=
t
"{0}"
_dispatch
[
type
(
t
).
__repr__
]
=
_pprint_template
_dispatch
[
type
(
t
.
interpolations
[
0
]).
__repr__
]
=
_pprint_interpolation
del
t
def
_safe_repr
(
self
,
object
,
context
,
maxlevels
,
level
):
# Return triple (repr_string, isreadable, isrecursive).
typ
=
type
(
object
)
if
typ
in
_builtin_scalars
:
return
repr
(
object
),
True
,
False
r
=
getattr
(
typ
,
"__repr__"
,
None
)
if
issubclass
(
typ
,
int
)
and
r
is
int
.
__repr__
:
if
self
.
_underscore_numbers
:
return
f"
{
object
:_d
}
"
,
True
,
False
else
:
return
repr
(
object
),
True
,
False
if
((
issubclass
(
typ
,
dict
)
and
r
is
dict
.
__repr__
)
or
(
issubclass
(
typ
,
frozendict
)
and
r
is
frozendict
.
__repr__
)):
is_frozendict
=
issubclass
(
typ
,
frozendict
)
if
not
object
:
if
is_frozendict
:
rep
=
f"
{
object
.
__class__
.
__name__
}
()"
else
:
rep
=
"{}"
return
rep
,
True
,
False
objid
=
id
(
object
)
if
maxlevels
and
level
>=
maxlevels
:
rep
=
"{...}"
if
is_frozendict
:
rep
=
f"
{
object
.
__class__
.
__name__
}
(
{
rep
}
)"
return
rep
,
False
,
objid
in
context
if
objid
in
context
:
return
_recursion
(
object
),
False
,
True
context
[
objid
]
=
1
readable
=
True
recursive
=
False
components
=
[]
append
=
components
.
append
level
+=
1
if
self
.
_sort_dicts
:
items
=
sorted
(
object
.
items
(),
key
=
_safe_tuple
)
else
:
items
=
object
.
items
()
for
k
,
v
in
items
:
krepr
,
kreadable
,
krecur
=
self
.
format
(
k
,
context
,
maxlevels
,
level
)
vrepr
,
vreadable
,
vrecur
=
self
.
format
(
v
,
context
,
maxlevels
,
level
)
append
(
"%s: %s"
%
(
krepr
,
vrepr
))
readable
=
readable
and
kreadable
and
vreadable
if
krecur
or
vrecur
:
recursive
=
True
del
context
[
objid
]
rep
=
"{%s}"
%
", "
.
join
(
components
)
if
is_frozendict
:
rep
=
f"
{
object
.
__class__
.
__name__
}
(
{
rep
}
)"
return
rep
,
readable
,
recursive
if
(
issubclass
(
typ
,
list
)
and
r
is
list
.
__repr__
)
or
\
(
issubclass
(
typ
,
tuple
)
and
r
is
tuple
.
__repr__
):
if
issubclass
(
typ
,
list
):
if
not
object
:
return
"[]"
,
True
,
False
format
=
"[%s]"
elif
len
(
object
)
==
1
:
format
=
"(%s,)"
else
:
if
not
object
:
return
"()"
,
True
,
False
format
=
"(%s)"
objid
=
id
(
object
)
if
maxlevels
and
level
>=
maxlevels
:
return
format
%
"..."
,
False
,
objid
in
context
if
objid
in
context
:
return
_recursion
(
object
),
False
,
True
context
[
objid
]
=
1
readable
=
True
recursive
=
False
components
=
[]
append
=
components
.
append
level
+=
1
for
o
in
object
:
orepr
,
oreadable
,
orecur
=
self
.
format
(
o
,
context
,
maxlevels
,
level
)
append
(
orepr
)
if
not
oreadable
:
readable
=
False
if
orecur
:
recursive
=
True
del
context
[
objid
]
return
format
%
", "
.
join
(
components
),
readable
,
recursive
if
issubclass
(
typ
,
_collections
.
abc
.
MappingView
)
and
r
in
self
.
_view_reprs
:
objid
=
id
(
object
)
if
maxlevels
and
level
>=
maxlevels
:
return
"{...}"
,
False
,
objid
in
context
if
objid
in
context
:
return
_recursion
(
object
),
False
,
True
key
=
_safe_key
if
issubclass
(
typ
, (
self
.
_dict_items_view
,
_collections
.
abc
.
ItemsView
)):
key
=
_safe_tuple
if
hasattr
(
object
,
"_mapping"
):
# Dispatch formatting to the view's _mapping
mapping_repr
,
readable
,
recursive
=
self
.
format
(
object
.
_mapping
,
context
,
maxlevels
,
level
)
return
(
typ
.
__name__
+
'(%s)'
%
mapping_repr
),
readable
,
recursive
elif
hasattr
(
typ
,
"_mapping"
):
# We have a view that somehow has lost its type's _mapping, raise
# an error by calling repr() instead of failing cryptically later
return
repr
(
object
),
True
,
False
if
self
.
_sort_dicts
:
object
=
sorted
(
object
,
key
=
key
)
context
[
objid
]
=
1
readable
=
True
recursive
=
False
components
=
[]
append
=
components
.
append
level
+=
1
for
val
in
object
:
vrepr
,
vreadable
,
vrecur
=
self
.
format
(
val
,
context
,
maxlevels
,
level
)
append
(
vrepr
)
readable
=
readable
and
vreadable
if
vrecur
:
recursive
=
True
del
context
[
objid
]
return
typ
.
__name__
+
'([%s])'
%
", "
.
join
(
components
),
readable
,
recursive
rep
=
repr
(
object
)
return
rep
, (
rep
and
not
rep
.
startswith
(
'<'
)),
False
_builtin_scalars
=
frozenset
({
str
,
bytes
,
bytearray
,
float
,
complex
,
bool
,
type
(
None
)})
def
_recursion
(
object
):
return
(
"<Recursion on %s with id=%s>"
%
(
type
(
object
).
__name__
,
id
(
object
)))
def
_wrap_bytes_repr
(
object
,
width
,
allowance
):
current
=
b''
last
=
len
(
object
)
//
4
*
4
for
i
in
range
(
0
,
len
(
object
),
4
):
part
=
object
[
i
:
i
+
4
]
candidate
=
current
+
part
if
i
==
last
:
width
-=
allowance
if
len
(
repr
(
candidate
))
>
width
:
if
current
:
yield
repr
(
current
)
current
=
part
else
:
current
=
candidate
if
current
:
yield
repr
(
current
)
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