我在 asp.net webapi 中使用以下代码进行音频流，以允许 Android 应用程序调用 api 并播放歌曲。
public class AudioController : ApiController
{
ITrackRepository _TrackRepo = new TrackRepository();
public AudioController()
{
}
public HttpResponseMessage Get(int id)
{
var trackd = _TrackRepo.GetPlayfilepath(id);
string filename = System.Web.HttpContext.Current.Server.MapPath(trackd.Select(x => x.FilePath).FirstOrDefault());
var audio = new AudioStream(filename);
string fileExtension = System.IO.Path.GetExtension(filename);
var response = Request.CreateResponse();
response.Content = new PushStreamContent(audio.WriteToStream, new MediaTypeHeaderValue("audio/" + fileExtension));
return response;
}
}
public class AudioStream
{
private readonly string _filename;
public AudioStream(string filename)
{
_filename = filename;
}
public …我需要从加拿大政府的公共地理数据库在我的电脑（Windows 操作系统）上的文件夹“C:\DEMDownload”中下载几个（数字地球模型）zip 文件。
当我在该行运行代码时，ftp.retrbinary('RETR %s' %file, open(local_file, 'wb').write)我收到以下错误消息
Traceback (most recent call last):
File "<input>", line 1, in <module>
File "C:\Python27\lib\ftplib.py", line 414, in retrbinary
conn = self.transfercmd(cmd, rest)
File "C:\Python27\lib\ftplib.py", line 376, in transfercmd
return self.ntransfercmd(cmd, rest)[0]
File "C:\Python27\lib\ftplib.py", line 339, in ntransfercmd
resp = self.sendcmd(cmd)
File "C:\Python27\lib\ftplib.py", line 249, in sendcmd
return self.getresp()
File "C:\Python27\lib\ftplib.py", line 224, in getresp
raise error_perm, resp
error_perm: 550 Failed to open file.
第二。是否可以避免编写 available_days 列表并创建所有要下载的 zip 文件的列表
import …PHP Fatal error: Allowed memory size of 134217728 bytes exhausted
(tried to allocate 32768 bytes) in
/vendor/symfony/debug/Exception/FatalErrorException.php on line 1 PHP Stack trace:
我收到以下错误，该错误未在 try catch 块中拦截。
use \Exception as Exception;
try {
$this->recursiveCall();
} catch (ErrorException $ex) {
exit;
}catch (Exception $ex) {
exit;
}
如果在 php.ini 中提高到memory_limit = 512M它工作正常，但困扰我的是错误没有得到处理。
我读过您可以编写自己的 php 错误回调，但恐怕 Laravel 错误处理可能取决于此。
有什么想法如何处理这个问题吗？10倍
我从一个更大的 Jenkins 管道项目创建了一个测试用例，它工作得很好。
pipeline {
agent none
stages {
stage ("Check Parameters")
{
steps {
echo "In pipeline"
script {
echo "Start condition check"
}
build job: 'printuser'
//def slaveJob = build job: 'printuser'
//println slaveJob.rawBuild.log
}
}
}
}
然而，为了将 printuser 作业的输出获取到管道上，我注释了 build job: 'printuser' 并取消注释了 SlaveJob 代码，如下所示：
//build job: 'printuser'
def slaveJob = build job: 'printuser'
println slaveJob.rawBuild.log
现在失败并出现以下错误：
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 13: Expected a step @ line 13, column 15.
def slaveJob = build job: 'printuser' …我知道这里有很多类似的问题，但他们似乎都没有遇到我所遇到的问题。这是代码。
class Tournament(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super(Tournament, self).__init__()
self.setupUi(self)
self.games = [Game(eval('self.combo' + str(i), globals(), locals())) for i in range(1, 15)]
当我运行它时，我在最后一行得到“NameError：名称'self'未定义”。我在列表理解之前和期间打印了 locals() ，它在列表理解之前显示“self”，但不在其中显示。所以我尝试将其保存到临时变量中
class Tournament(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super(Tournament, self).__init__()
self.setupUi(self)
loc = locals()
self.games = [Game(eval('self.combo' + str(i), globals(), loc)) for i in range(1, 15)]
我在最后一行得到了同样的错误。
谁能告诉我这里发生了什么事？我能够使用常规的“for”循环来解决它，但我真的很想了解为什么它不能以这种方式工作。
编辑：添加第二个示例中的完整错误消息
Traceback (most recent call last):
File "tournament.py", line 55, in <module>
interface = Tournament()
File "tournament.py", line 48, in __init__
self.games = [Game(eval('self.combo' + str(i)), globals(), loc) for i in …这应该是一个递归函数，当 i 小于 'h' 时，它不断向 'h' 添加 1/i 的值，但我在函数声明中不断收到冲突类型错误，我做错了什么？它只是发生在浮动中。
#include <stdio.h>
int main()
{
int i=0, n = 5;
float h;
division(i, n, h);
return 0;
}
float division(int i, int n, float h)
{
if(i<n)
{
h += 1/i;
division(i, n, h);
}
else
{
printf("the sum is: %f",h);
return h;
}
}
c floating-point runtime-error division function-declaration
我有一个运行时错误：
RuntimeError:
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.
This probably means that you are not using fork to start your
child processes and you have forgotten to use the proper idiom
in the main module:
if __name__ == '__main__':
freeze_support()
...
The "freeze_support()" line can be omitted if the program
is not going to be frozen to produce an executable.
0%| | 0/29 [00:48<?, ?it/s]
当我尝试运行此代码时：
def …我在使用 dsbulk 卸载时收到以下消息。我不明白这意味着什么
[s0|347101951|0] 发送取消请求时出错。这并不重要（请求最终会在服务器端超时）。（心跳异常：空）
不发送心跳，因为前一个心跳仍在进行中。检查advanced.heartbeat.interval是否不低于advanced.heartbeat.timeout。
谢谢
我正在用 python 制作虚拟助手，但我看到以下错误。
ImportError: No system module 'pywintypes' (pywintypes39.dll)
我使用的是 Windows 10 和 Python 3.9
这是代码
import speech_recognition as sr
import pyttsx3
listner=sr.Recognizer()
engine=pyttsx3.init()
engine.say('Hello Vishal. I am Cisco')
engine.say('What do you want me to do?')
engine.runAndWait()
try:
with sr.Microphone() as source:
print('listening...')
voice=listner.listen(source)
command = listner.recognize_google(voice)
command=command.lower()
if "cisco" in command:
print(command)
except:
print('Something went wrong')
另外，当我运行该程序时，控制台会打印以下内容：
enter code hraceback (most recent call last):
File "C:\Users\visha\AppData\Roaming\Python\Python39\site-packages\pyttsx3\__init__.py", line 20, in init
eng = _activeEngines[driverName]
File "C:\Program Files (x86)\Python\lib\weakref.py", line 134, …第 1034 行：字符 9：运行时错误：引用绑定到类型 'std::vector<int, std::allocator>' (stl_vector.h) 的空指针摘要：UndefinedBehaviorSanitizer：未定义行为 /usr/bin/../ lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_vector.h:1043:9
void gameOfLife(vector<vector<int>>& board) {
vector<vector<int>> newBoard;
for(int i = 0; i < board.size(); i++){
for(int j = 0; j < board[i].size(); j++){
if(board[i][j] == 0 && neibSum(board,i,j) == 3)
newBoard[i][j] = 1;
else if(board[i][j] == 1 && neibSum(board,i,j) > 3)
newBoard[i][j] = 0;
else if(board[i][j] == 1 && neibSum(board,i,j) < 2)
newBoard[i][j] = 0;
else
newBoard[i][j] = 1;
}
}
for(int i = 0; i < board.size(); i++){
for(int j …