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2gua我是2gua V2EX member #35291, joined on 2013-03-06 10:53:52 +08:00 |
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Jul 11, 2019 Replied to a topic by Dragonish3600 › Python › Python 正则表达式合并的问题 |
from typing import Optional, Match, Pattern, Tuple
import re
def matchs(target: str) -> Optional[str]:
pat: Pattern[str] = re.compile(r"port\s*(\d+)|Logon ID:\s*(\w+)")
res: Optional[Match[str]] = re.search(pat, target)
if res:
g: Tuple[Optional[str], Optional[str]] = res.groups()
return g[0] if g[0] else g[1]
return None
import re
def matchs(target: str) -> Optional[str]:
pat: Pattern[str] = re.compile(r"port\s*(\d+)|Logon ID:\s*(\w+)")
res: Optional[Match[str]] = re.search(pat, target)
if res:
g: Tuple[Optional[str], Optional[str]] = res.groups()
return g[0] if g[0] else g[1]
return None
Jul 1, 2019 Replied to a topic by noli › Python › [可能引战] 用过 Python 也没法理解为什么 Python 是个好语言 |
不知道 Python 好在哪儿。就是每每用到它时，感觉写代码很愉悦就是了。比如这样我就觉得很方便：
In [79]: m1 = {'a': 1, 'b': 2}
In [80]: m2 = {'c': 3, 'd': 4}
In [81]: {**m1, **m2}
Out[81]: {'a': 1, 'b': 2, 'c': 3, 'd': 4}
In [79]: m1 = {'a': 1, 'b': 2}
In [80]: m2 = {'c': 3, 'd': 4}
In [81]: {**m1, **m2}
Out[81]: {'a': 1, 'b': 2, 'c': 3, 'd': 4}
Feb 4, 2018 Replied to a topic by bingod › Python › 2018 年，你选择 Flask 还是 Django？ |
Flask 玩腻，现在选 Django。
Feb 3, 2018 Replied to a topic by frank065 › Python › 求教算法，二维 list 如何遍历子项生成新的 list？ |
lst = [['a', 'b', 'c'], ['@', '#', '$', '%'], ['1', '2']]
1.
import itertools
[list(i) for i in itertools.product(*lst)]
2.
def cross(lst):
def swim(l, t, res):
if len(l) == 0:
res += [t]
return
for i in l[0]:
swim(l[1:], t + [i], res)
res = []
swim(lst, [], res)
return res
1.
import itertools
[list(i) for i in itertools.product(*lst)]
2.
def cross(lst):
def swim(l, t, res):
if len(l) == 0:
res += [t]
return
for i in l[0]:
swim(l[1:], t + [i], res)
res = []
swim(lst, [], res)
return res
Oct 11, 2016 Replied to a topic by barretlee › 程序员 › 你用的哪个编辑器， ST/Atom/VSC？ |
VS Code.
Dec 7, 2013 Replied to a topic by h2sky › 问与答 › 你喜欢去哪个网站听音乐？ |
Dec 7, 2013 Replied to a topic by huafang › 程序员 › 你从接触一门新的编程语言，到能用它写完整的case ，需要多久？@Livid |
如果出于了解的目的，就不一定会写项目。
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