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gh-134551: Add t-strings support to pprint#134577

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loic-simon wants to merge5 commits intopython:main
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23 changes: 23 additions & 0 deletionsLib/pprint.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -609,6 +609,29 @@ def _pprint_user_string(self, object, stream, indent, allowance, context, level)

_dispatch[_collections.UserString.__repr__] = _pprint_user_string

def _pprint_template(self, object, stream, indent, allowance, context, level):
cls_name = object.__class__.__name__
indent += len(cls_name) + 1
items = (("strings", object.strings),
("interpolations", object.interpolations))
stream.write(cls_name + '(')
self._format_namespace_items(items, stream, indent, allowance, context, level)
stream.write(')')

def _pprint_interpolation(self, object, stream, indent, allowance, context, level):
cls_name = object.__class__.__name__
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)
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1 change: 1 addition & 0 deletionsLib/test/.ruff.toml
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Original file line numberDiff line numberDiff line change
Expand Up@@ -10,6 +10,7 @@ extend-exclude = [
"encoded_modules/module_koi8_r.py",
# SyntaxError because of t-strings
"test_annotationlib.py",
"test_pprint.py",
"test_string/test_templatelib.py",
"test_tstring.py",
# New grammar constructions may not yet be recognized by Ruff,
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32 changes: 32 additions & 0 deletionsLib/test/test_pprint.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -1472,6 +1472,38 @@ def test_user_string(self):
'jumped over a '
'lazy dog'}""")

def test_template(self):
d = t""
self.assertEqual(pprint.pformat(d),
"Template(strings=('',), interpolations=())")
self.assertEqual(pprint.pformat(d), repr(d))
self.assertEqual(pprint.pformat(d, width=1),
"""\
Template(strings=('',),
interpolations=())""")
name = "World"
d = t"Hello {name}"
self.assertEqual(pprint.pformat(d),
"""\
Template(strings=('Hello ', ''),
interpolations=(Interpolation('World', 'name', None, ''),))""")
ver = {3.13: False, 3.14: True}
d = t"Hello { {"name": "Python", "version": ver}!s:z}!"
self.assertEqual(pprint.pformat(d, width=1),
"""\
Template(strings=('Hello ',
'!'),
interpolations=(Interpolation({'name': 'Python',
'version': {3.13: False,
3.14: True}},
' '
'{"name": '
'"Python", '
'"version": '
'ver}',
's',
'z'),))""")


class DottedPrettyPrinter(pprint.PrettyPrinter):

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1 @@
Add t-strings support to pprint functions
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