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GeezerVison is showing github.com — bpo-47211: Remove function re.template() and flag re.TEMPLATE (GH-32300) · python/cpython@b09184b

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  • Lib
    • re
      • __init__.py
      • _compiler.py
      • _constants.py
      • _parser.py
    • test
      • test_re.py
  • Misc/NEWS.d/next/Library
    • 2022-04-04-11-58-07.bpo-47211.W4GFkB.rst
  • Modules/_sre
    • sre.c
    • sre_constants.h
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‎Lib/re/__init__.py‎

Copy file name to clipboardExpand all lines: Lib/re/__init__.py
+1-7Lines changed: 1 addition & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -129,7 +129,7 @@
129129
# public symbols
130130
__all__ = [
131131
"match", "fullmatch", "search", "sub", "subn", "split",
132-
"findall", "finditer", "compile", "purge", "template", "escape",
132+
"findall", "finditer", "compile", "purge", "escape",
133133
"error", "Pattern", "Match", "A", "I", "L", "M", "S", "X", "U",
134134
"ASCII", "IGNORECASE", "LOCALE", "MULTILINE", "DOTALL", "VERBOSE",
135135
"UNICODE", "NOFLAG", "RegexFlag",
@@ -148,8 +148,6 @@ class RegexFlag:
148148
MULTILINE = M = _compiler.SRE_FLAG_MULTILINE # make anchors look for newline
149149
DOTALL = S = _compiler.SRE_FLAG_DOTALL # make dot match newline
150150
VERBOSE = X = _compiler.SRE_FLAG_VERBOSE # ignore whitespace and comments
151-
# sre extensions (experimental, don't rely on these)
152-
TEMPLATE = T = _compiler.SRE_FLAG_TEMPLATE # disable backtracking
153151
DEBUG = _compiler.SRE_FLAG_DEBUG # dump pattern after compilation
154152
__str__ = object.__str__
155153
_numeric_repr_ = hex
@@ -231,10 +229,6 @@ def purge():
231229
_cache.clear()
232230
_compile_repl.cache_clear()
233231

234-
def template(pattern, flags=0):
235-
"Compile a template pattern, returning a Pattern object"
236-
return _compile(pattern, flags|T)
237-
238232
# SPECIAL_CHARS
239233
# closing ')', '}' and ']'
240234
# '-' (a range in character set)
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‎Lib/re/_compiler.py‎

Copy file name to clipboardExpand all lines: Lib/re/_compiler.py
-2Lines changed: 0 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -147,8 +147,6 @@ def _compile(data, pattern, flags):
147147
else:
148148
emit(ANY)
149149
elif op in REPEATING_CODES:
150-
if flags & SRE_FLAG_TEMPLATE:
151-
raise error("internal: unsupported template operator %r" % (op,))
152150
if _simple(av[2]):
153151
emit(REPEATING_CODES[op][2])
154152
skip = _len(code); emit(0)
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‎Lib/re/_constants.py‎

Copy file name to clipboardExpand all lines: Lib/re/_constants.py
-2Lines changed: 0 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -202,7 +202,6 @@ def _makecodes(names):
202202
}
203203

204204
# flags
205-
SRE_FLAG_TEMPLATE = 1 # template mode (disable backtracking)
206205
SRE_FLAG_IGNORECASE = 2 # case insensitive
207206
SRE_FLAG_LOCALE = 4 # honour system locale
208207
SRE_FLAG_MULTILINE = 8 # treat target as multiline string
@@ -245,7 +244,6 @@ def dump(f, d, prefix):
245244
dump(f, ATCODES, "SRE")
246245
dump(f, CHCODES, "SRE")
247246

248-
f.write("#define SRE_FLAG_TEMPLATE %d\n" % SRE_FLAG_TEMPLATE)
249247
f.write("#define SRE_FLAG_IGNORECASE %d\n" % SRE_FLAG_IGNORECASE)
250248
f.write("#define SRE_FLAG_LOCALE %d\n" % SRE_FLAG_LOCALE)
251249
f.write("#define SRE_FLAG_MULTILINE %d\n" % SRE_FLAG_MULTILINE)
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‎Lib/re/_parser.py‎

Copy file name to clipboardExpand all lines: Lib/re/_parser.py
+1-2Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -61,12 +61,11 @@
6161
"x": SRE_FLAG_VERBOSE,
6262
# extensions
6363
"a": SRE_FLAG_ASCII,
64-
"t": SRE_FLAG_TEMPLATE,
6564
"u": SRE_FLAG_UNICODE,
6665
}
6766

6867
TYPE_FLAGS = SRE_FLAG_ASCII | SRE_FLAG_LOCALE | SRE_FLAG_UNICODE
69-
GLOBAL_FLAGS = SRE_FLAG_DEBUG | SRE_FLAG_TEMPLATE
68+
GLOBAL_FLAGS = SRE_FLAG_DEBUG
7069

7170
class Verbose(Exception):
7271
pass
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‎Lib/test/test_re.py‎

Copy file name to clipboardExpand all lines: Lib/test/test_re.py
+3-3Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -2432,11 +2432,11 @@ def test_flags_repr(self):
24322432
"re.IGNORECASE|re.DOTALL|re.VERBOSE|0x100000")
24332433
self.assertEqual(
24342434
repr(~re.I),
2435-
"re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DOTALL|re.VERBOSE|re.TEMPLATE|re.DEBUG")
2435+
"re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DOTALL|re.VERBOSE|re.DEBUG|0x1")
24362436
self.assertEqual(repr(~(re.I|re.S|re.X)),
2437-
"re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG")
2437+
"re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DEBUG|0x1")
24382438
self.assertEqual(repr(~(re.I|re.S|re.X|(1<<20))),
2439-
"re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG|0xffe00")
2439+
"re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DEBUG|0xffe01")
24402440

24412441

24422442
class ImplementationTest(unittest.TestCase):
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‎Misc/NEWS.d/next/Library/2022-04-04-11-58-07.bpo-47211.W4GFkB.rst‎

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+2Lines changed: 2 additions & 0 deletions
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  • Display the rich diff
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
1+
Remove undocumented and never working function ``re.template()`` and flag
2+
``re.TEMPLATE``.
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‎Modules/_sre/sre.c‎

Copy file name to clipboardExpand all lines: Modules/_sre/sre.c
-1Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1323,7 +1323,6 @@ pattern_repr(PatternObject *obj)
13231323
const char *name;
13241324
int value;
13251325
} flag_names[] = {
1326-
{"re.TEMPLATE", SRE_FLAG_TEMPLATE},
13271326
{"re.IGNORECASE", SRE_FLAG_IGNORECASE},
13281327
{"re.LOCALE", SRE_FLAG_LOCALE},
13291328
{"re.MULTILINE", SRE_FLAG_MULTILINE},
Collapse file

‎Modules/_sre/sre_constants.h‎

Copy file name to clipboardExpand all lines: Modules/_sre/sre_constants.h
-1Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -86,7 +86,6 @@
8686
#define SRE_CATEGORY_UNI_NOT_WORD 15
8787
#define SRE_CATEGORY_UNI_LINEBREAK 16
8888
#define SRE_CATEGORY_UNI_NOT_LINEBREAK 17
89-
#define SRE_FLAG_TEMPLATE 1
9089
#define SRE_FLAG_IGNORECASE 2
9190
#define SRE_FLAG_LOCALE 4
9291
#define SRE_FLAG_MULTILINE 8

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