大约有 10,000 项符合查询结果(耗时:0.0207秒) [XML]

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Getting file size in Python? [duplicate]

... Use os.path.getsize(path) which will Return the size, in bytes, of path. Raise OSError if the file does not exist or is inaccessible. import os os.path.getsize('C:\\Python27\\Lib\\genericpath.py') Or use os.stat(path).st_...
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CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛,有思想、有深度

...onfigure         //配置PCRE,因为PCRE是一个库,而不是像pache、php、postfix等这样的程序,所以我们安装时选择默认路径即可,这样会在后面安装其它东西时避免一些不必要的麻烦,执行完这部后会显示出下图,...
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BLE协议—广播和扫描 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...协议—广播和扫描广播和扫描在无线通信中是非常重要的一个技术点。在BLE中,扫描和广播是通信的基础,用户可以直接用扫描和广播进行数据的传输(数据量不大,功耗要求较高的情况下),也可以在广播和扫描的基础上进行...
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从网购到火车票,对比淘宝12306网为何如此烂? - 大数据 & AI - 清泛网 - ...

...一下12306的购票系统,为避免“黄牛”买票,购票系统有一个业务逻辑:一个有效身份证件同一乘车日期同一车次限购一张车票。因此购买一张车票可以简化为包含四个操作: 1) 判断同一乘车日期同一车次是否有未预订的空余...
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浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术

...起来也很简单容易, 以至于不用去思考为什么,不是有一个整型范围的公式吗: -2^(n-1)~2^(n-1)-1 n为整型的内存占用位数,所以int类型32位 那么就是 -(2^31)~2^31 -1 即 -2147483648~2147483647,但是为什么最小负数绝对值总比最大正数...
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Rename multiple files in a directory in Python [duplicate]

... Use os.rename(src, dst) to rename or move a file or a directory. $ ls cheese_cheese_type.bar cheese_cheese_type.foo $ python >>> import os >>> for filename in os.listdir("."): ... if filename.startswith("chee...
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How to get file creation & modification date/times in Python?

... Getting some sort of modification date in a cross-platform way is easy - just call os.path.getmtime(path) and you'll get the Unix timestamp of when the file at path was last modified. Getting file creation dates, on the other hand, is fiddly and platform-dependent, diff...
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How to delete a file or folder?

... os.remove() removes a file. os.rmdir() removes an empty directory. shutil.rmtree() deletes a directory and all its contents. Path objects from the Python 3.4+ pathlib module also expose these instance methods: pathlib.P...
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How to get all of the immediate subdirectories in Python

...;dr: Always use scandir: list_subfolders_with_paths = [f.path for f in os.scandir(path) if f.is_dir()] Bonus: With scandir you can also simply only get folder names by using f.name instead of f.path. This (as well as all other functions below) will not use natural sorting. This means results w...
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Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...,这也是无法用 kill 杀掉它的原因。 在 Stack Overflow 有一个解答: kill -9 只是给进程发送了一个 SIGKILL 信号,当一个进程处于特殊状态时(信号处理,或者系统调用中)会无法处理任何信号,包括 SIGKILL 也不能被正确处理,...