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Python：将文件中的数据加载到 IRC 机器人中

发布于 2024-10-16 01:35:06 字数 168 浏览 2 评论 0原文

我正在尝试从文件加载正则表达式模式列表，并且希望它将每个正则表达式条目拉入一个数组，该数组稍后可用于匹配传入的文本模式，然后根据它们触发操作。

我已经掌握了使 re.search() 工作的窍门，但是如何从文件加载正则表达式模式，然后使用 re.search() 参数扫描从文件中提取的各种正则表达式模式？

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独行侠 2024-10-23 01:35:06

如果您想在正则表达式与文本模式匹配时触发操作，则可能需要将正则表达式映射到该操作（假设它是对与映射在同一文件中定义的函数的引用）。假设我们在 python 文件 rules.py 中定义规则，如下所示：

mappings = [
    # (regex, action_name)
    (r'Hi ([a-z]+)!', greet),
    (r'Bye', bye),
]

def greet(msg):
    return 'Hello'

def bye(msg):
    return 'Bye'

在 main.py 中导入映射，编译所有正则表达式（一次性操作以避免每次搜索都重新编译它们），然后对传入的消息进行搜索。

import rules

# compile regex
compiled = dict([(re.compile(regex), action_name) for (regex, action_name) in rules.mappings])

def incoming(msg):
    for regex, action_name in compiled:
        if regex.search(msg):
            # if search is successfull, execute action
            action_function = getattr(rules, action_name)
            action(msg)

当然，这取决于您想要如何触发该操作，但我希望主要原则是明确的。

If you want to trigger an action when a regex matches an text pattern, you probably need some mapping of regex to the action (let's assume it is a reference to a function defined in the same file as the mappings). Say we define the rules in a python file rules.py like this:

mappings = [
    # (regex, action_name)
    (r'Hi ([a-z]+)!', greet),
    (r'Bye', bye),
]

def greet(msg):
    return 'Hello'

def bye(msg):
    return 'Bye'

In your main.py you import the mappings, compile all regex expressions (one-time operation to avoid recompiling them every search) and then do a search against incoming messages.

import rules

# compile regex
compiled = dict([(re.compile(regex), action_name) for (regex, action_name) in rules.mappings])

def incoming(msg):
    for regex, action_name in compiled:
        if regex.search(msg):
            # if search is successfull, execute action
            action_function = getattr(rules, action_name)
            action(msg)

Of course it depends on how you want to trigger that action, but I hope the main principle is clear.

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野心澎湃 2024-10-23 01:35:06

# pre-compile regexes:
with open('regex_file.txt') as f:
   regexes = [re.compile(regex.strip()) for regex in f]

# use them
for regex in regexes:
    m = regex.search(text)
    if m:
        print 'got match!!'

# pre-compile regexes:
with open('regex_file.txt') as f:
   regexes = [re.compile(regex.strip()) for regex in f]

# use them
for regex in regexes:
    m = regex.search(text)
    if m:
        print 'got match!!'

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