python 的 setuptools 提供了三种将非 python文件添加到包中的方法:
本指南package_data对和进行了相当详细的描述data_files,但没有提及extra_files.
是做什么extra_files用的?或者它只是一个已弃用的遗留选项?
我正在尝试从Udacity的Full Stack Foundations课程中进行练习.我do_POST在我的子类中有方法BaseHTTPRequestHandler,基本上我想获得一个名为messagesubmit with multipart form 的post值,这是方法的代码:
def do_POST(self):
try:
if self.path.endswith("/Hello"):
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers
ctype, pdict = cgi.parse_header(self.headers['content-type'])
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ""
output += "<html><body>"
output += "<h2>Ok, how about this?</h2>"
output += "<h1>{}</h1>".format(messagecontent)
output += "<form method='POST' enctype='multipart/form-data' action='/Hello'>"
output += "<h2>What would you like to say?</h2>"
output += "<input name='message' type='text'/><br/><input type='submit' value='Submit'/>"
output += "</form></body></html>"
self.wfile.write(output.encode('utf-8'))
print(output)
return
except: …Run Code Online (Sandbox Code Playgroud) 我正在阅读有关虚拟内存的内容,我的结论如下:
malloc(size);
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我是对还是错?请解释。
当apt-get dist-upgrade在 Windows 10 Spring Creators Update (RS4) 上运行 Ubuntu 18.04 时,我收到此错误:
Preparing to unpack .../ebtables_2.0.10.4-3.5ubuntu2.18.04.1_amd64.deb ...
invoke-rc.d: could not determine current runlevel
* Error: insufficient privileges to access the ebtables rulesets.
invoke-rc.d: initscript ebtables, action "stop" failed.
dpkg: warning: old ebtables package pre-removal script subprocess returned error exit status 1
dpkg: trying script from the new package instead ...
invoke-rc.d: could not determine current runlevel
* Error: insufficient privileges to access the ebtables rulesets.
invoke-rc.d: initscript ebtables, …Run Code Online (Sandbox Code Playgroud) 我有一个测试用例,它提供参数并执行类的主要方法.使用Junit让多个线程恢复执行类的主要方法的最佳方法是什么.
命令:
>> mat = magic( 4 );
>> out = cat( 3, mat, mat );
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沿第三维连接矩阵 'mat' 2 次并生成 4×4×2 数组
如何在不使用循环的情况下“n”次完成这项工作并生成 4×4×n 数组?
我知道通过使用像这样的元胞数组可以做到这一点:
>> out = cat( 3, cellArray{:} );
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但如何创建这个元胞数组呢?:
>> cellArray = {mat, mat, ... , mat}; % n time
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如何在matlab中连接数组n次?
这是这里的一个简单示例,它显示了简约命令行参数解析器的基础知识:
var minimist = require('minimist')
var args = minimist(process.argv.slice(2), {
string: 'lang', // --lang xml
boolean: ['version'], // --version
alias: { v: 'version' }
})
console.log(args)
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我想打印这个简单脚本的用法,如下所示:
$ node myprog
Usage: myprog [options]
Short description
Options:
--lang <lang> sets the language
--version output the version number
-h, --help output usage information
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我怎样才能使用极简主义来做到这一点?
或者我应该使用其他工具,例如Commander?
我找到了这个opencl示例代码:
/*
* Simple OpenCL demo program
*
* Copyright (C) 2009 Clifford Wolf <clifford@clifford.at>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; …Run Code Online (Sandbox Code Playgroud) 我想使用TCL删除目录中的所有文件.(我在Win 10下使用Xilinx Vivado的TCL控制台.)我在TCL文档中发现了这一点
file delete ?-force? ?- -? pathname ?pathname ... ?
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应该管用.但
file delete -force -- [glob *]
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什么也没做.这有什么不对?
pyhton ProcessPoolExecutor 在公共行中工作,但在添加到函数后不运行
它是这样工作的
from concurrent import futures
def multi_process(func, paras, threads):
with futures.ProcessPoolExecutor(max_workers=threads) as pool:
res = pool.map(func, paras, chunksize=threads)
return list(res)
p = multi_process(func,paras,threads)
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但根本不工作,如下所示
def upper(paras,threads):
def func:
some func
def multi_process(func, paras, threads):
with futures.ProcessPoolExecutor(max_workers=threads) as pool:
res = pool.map(func, paras, chunksize=threads)
return list(res)
p = multi_process(func,paras,threads)
return p
p = upper(paras,threads)
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没有警告或错误,但很长时间没有任何反应。
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