class NamePrep:
""" Implements preparation of internationalized domain names.
This class implements preparing internationalized domain names using the
rules defined in RFC 3491, section 4 (Conversion operations).
We do not perform step 4 since we deal with unicode representations of
domain names and do not convert from or to ASCII representations using
punycode encoding. When such a conversion is needed, the C{idna} standard
library provides the C{ToUnicode()} and C{ToASCII()} functions. Note that
C{idna} itself assumes UseSTD3ASCIIRules to be false.
The following steps are performed by C{prepare()}:
- Split the domain name in labels at the dots (RFC 3490, 3.1)
- Apply nameprep proper on each label (RFC 3491)
- Enforce the restrictions on ASCII characters in host names by
assuming STD3ASCIIRules to be true. (STD 3)
- Rejoin the labels using the label separator U+002E (full stop).
"""
# Prohibited characters.
prohibiteds = [
unichr(n)
for n in chain(range(0x00, 0x2c + 1), range(0x2e, 0x2f + 1),
range(0x3a, 0x40 + 1), range(0x5b, 0x60 +
1), range(0x7b, 0x7f + 1))
]
def prepare(self, string):
result = []
labels = idna.dots.split(string)
if labels and len(labels[-1]) == 0:
trailing_dot = u'.'
del labels[-1]
else:
trailing_dot = u''
for label in labels:
result.append(self.nameprep(label))
return u".".join(result) + trailing_dot
def check_prohibiteds(self, string):
for c in string:
if c in self.prohibiteds:
raise UnicodeError("Invalid character %s" % repr(c))
def nameprep(self, label):
label = idna.nameprep(label)
self.check_prohibiteds(label)
if label[0] == u'-':
raise UnicodeError("Invalid leading hyphen-minus")
if label[-1] == u'-':
raise UnicodeError("Invalid trailing hyphen-minus")
return label
def test_unichr(self):
"""
unichar exists and returns a unicode string with the given code point.
"""
self.assertEqual(unichr(0x2603), u"\N{SNOWMAN}")
#
#
# def GBK2312():
# password = ''
# while True:
# head = random.randint(0xb0, 0xf7)
# body = random.randint(0xa1, 0xf9) # 在head区号为55的那一块最后5个汉字是乱码,为了方便缩减下范围
# val = f'{head:x}{body:x}'
# str = bytes.fromhex(val).decode('gb2312')
# if str:
# password = str
# else:
#
#
# return str
#
#
# for i in range(10):
# g = GBK2312()
# print(g)
import codecs
from twisted.python.compat import unichr
start,end = (0x4E00, 0x9FA5)
with codecs.open("chinese.txt", "wb", encoding="utf-8") as f:
for codepoint in range(int(start),int(end)):
f.write(unichr(codepoint)) #写出汉字
