本文整理匯總了Python中_sre.MAXREPEAT屬性的典型用法代碼示例。如果您正苦於以下問題：Python _sre.MAXREPEAT屬性的具體用法？Python _sre.MAXREPEAT怎麽用？Python _sre.MAXREPEAT使用的例子？那麽, 這裏精選的屬性代碼示例或許可以為您提供幫助。您也可以進一步了解該屬性所在類_sre的用法示例。
在下文中一共展示了_sre.MAXREPEAT屬性的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: _simple
# 需要導入模塊: import _sre [as 別名]
# 或者: from _sre import MAXREPEAT [as 別名]
def _simple(av):
# check if av is a "simple" operator
lo, hi = av[2].getwidth()
if lo == 0 and hi == MAXREPEAT:
raise error("nothing to repeat")
return lo == hi == 1 and av[2][0][0] != SUBPATTERN 示例2: test_repeat_minmax_overflow
# 需要導入模塊: import _sre [as 別名]
# 或者: from _sre import MAXREPEAT [as 別名]
def test_repeat_minmax_overflow(self):
# Issue #13169
string = "x" * 100000
self.assertEqual(re.match(r".{65535}", string).span(), (0, 65535))
self.assertEqual(re.match(r".{,65535}", string).span(), (0, 65535))
self.assertEqual(re.match(r".{65535,}?", string).span(), (0, 65535))
self.assertEqual(re.match(r".{65536}", string).span(), (0, 65536))
self.assertEqual(re.match(r".{,65536}", string).span(), (0, 65536))
self.assertEqual(re.match(r".{65536,}?", string).span(), (0, 65536))
# 2**128 should be big enough to overflow both SRE_CODE and Py_ssize_t.
self.assertRaises(OverflowError, re.compile, r".{%d}" % 2**128)
self.assertRaises(OverflowError, re.compile, r".{,%d}" % 2**128)
self.assertRaises(OverflowError, re.compile, r".{%d,}?" % 2**128)
self.assertRaises(OverflowError, re.compile, r".{%d,%d}" % (2**129, 2**128))
# FIXME: brython: implement test.support
# @cpython_only
# def test_repeat_minmax_overflow_maxrepeat(self):
# try:
# from _sre import MAXREPEAT
# except ImportError:
# self.skipTest('requires _sre.MAXREPEAT constant')
# string = "x" * 100000
# self.assertIsNone(re.match(r".{%d}" % (MAXREPEAT - 1), string))
# self.assertEqual(re.match(r".{,%d}" % (MAXREPEAT - 1), string).span(),
# (0, 100000))
# self.assertIsNone(re.match(r".{%d,}?" % (MAXREPEAT - 1), string))
# self.assertRaises(OverflowError, re.compile, r".{%d}" % MAXREPEAT)
# self.assertRaises(OverflowError, re.compile, r".{,%d}" % MAXREPEAT)
# self.assertRaises(OverflowError, re.compile, r".{%d,}?" % MAXREPEAT) 示例3: test_repeat_minmax_overflow_maxrepeat
# 需要導入模塊: import _sre [as 別名]
# 或者: from _sre import MAXREPEAT [as 別名]
def test_repeat_minmax_overflow_maxrepeat(self):
try:
from _sre import MAXREPEAT
except ImportError:
self.skipTest('requires _sre.MAXREPEAT constant')
string = "x" * 100000
self.assertIsNone(re.match(r".{%d}" % (MAXREPEAT - 1), string))
self.assertEqual(re.match(r".{,%d}" % (MAXREPEAT - 1), string).span(),
(0, 100000))
self.assertIsNone(re.match(r".{%d,}?" % (MAXREPEAT - 1), string))
self.assertRaises(OverflowError, re.compile, r".{%d}" % MAXREPEAT)
self.assertRaises(OverflowError, re.compile, r".{,%d}" % MAXREPEAT)
self.assertRaises(OverflowError, re.compile, r".{%d,}?" % MAXREPEAT) 示例4: _simple
# 需要導入模塊: import _sre [as 別名]
# 或者: from _sre import MAXREPEAT [as 別名]
def _simple(av):
# check if av is a "simple" operator
lo, hi = av[2].getwidth()
if lo == 0 and hi == MAXREPEAT:
raise error, "nothing to repeat"
return lo == hi == 1 and av[2][0][0] != SUBPATTERN 示例5: getwidth
# 需要導入模塊: import _sre [as 別名]
# 或者: from _sre import MAXREPEAT [as 別名]
def getwidth(self):
# determine the width (min, max) for this subpattern
if self.width:
return self.width
lo = hi = 0
UNITCODES = (ANY, RANGE, IN, LITERAL, NOT_LITERAL, CATEGORY)
REPEATCODES = (MIN_REPEAT, MAX_REPEAT)
for op, av in self.data:
if op is BRANCH:
i = MAXREPEAT - 1
j = 0
for av in av[1]:
l, h = av.getwidth()
i = min(i, l)
j = max(j, h)
lo = lo + i
hi = hi + j
elif op is CALL:
i, j = av.getwidth()
lo = lo + i
hi = hi + j
elif op is SUBPATTERN:
i, j = av[1].getwidth()
lo = lo + i
hi = hi + j
elif op in REPEATCODES:
i, j = av[2].getwidth()
lo = lo + i * av[0]
hi = hi + j * av[1]
elif op in UNITCODES:
lo = lo + 1
hi = hi + 1
elif op == SUCCESS:
break
self.width = min(lo, MAXREPEAT - 1), min(hi, MAXREPEAT)
return self.width