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66 lines
1.8 KiB
66 lines
1.8 KiB
# -*- coding: utf-8 -*-
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#
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import random
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import secrets
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import socket
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import string
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import struct
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string_punctuation = '!#$%&()*+,-.:;<=>?@[]^_~'
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def random_datetime(date_start, date_end):
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random_delta = (date_end - date_start) * random.random()
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return date_start + random_delta
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def random_ip():
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return socket.inet_ntoa(struct.pack('>I', random.randint(1, 0xffffffff)))
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def random_replace_char(s, chars, length):
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using_index = set()
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seq = list(s)
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while length > 0:
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index = secrets.randbelow(len(seq) - 1)
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if index in using_index or index == 0:
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continue
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seq[index] = secrets.choice(chars)
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using_index.add(index)
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length -= 1
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return ''.join(seq)
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def remove_exclude_char(s, exclude_chars):
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for i in exclude_chars:
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s = s.replace(i, '')
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return s
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def random_string(
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length: int, lower=True, upper=True, digit=True,
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special_char=False, exclude_chars='', symbols=string_punctuation
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):
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if not any([lower, upper, digit]):
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raise ValueError('At least one of `lower`, `upper`, `digit` must be `True`')
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if length < 4:
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raise ValueError('The length of the string must be greater than 3')
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chars_map = (
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(lower, string.ascii_lowercase),
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(upper, string.ascii_uppercase),
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(digit, string.digits),
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)
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chars = ''.join([i[1] for i in chars_map if i[0]])
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chars = remove_exclude_char(chars, exclude_chars)
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texts = list(secrets.choice(chars) for __ in range(length))
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texts = ''.join(texts)
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# 控制一下特殊字符的数量, 别随机出来太多
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if special_char:
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symbols = remove_exclude_char(symbols, exclude_chars)
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symbol_num = length // 16 + 1
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texts = random_replace_char(texts, symbols, symbol_num)
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return texts
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