小编Cri*_*ati的帖子

我创建了一个交叉编译的arm可执行文件.我想找到可执行文件的库依赖项.我正在使用ubuntu natty并安装了arm-linux-gnueabi工具链,它不包含ldd.有没有一个工具可以在linux中查看arm可执行文件库的依赖性.

如何使用Python解码pem编码(base64)证书？例如,这里来自github.com:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

根据ssl-shopper,它应该是这样的:

Common Name: github.com
Subject Alternative Names: github.com, www.github.com
Organization: GitHub, Inc.
Locality: San Francisco
State: California
Country: US
Valid From: May 26, 2011
Valid To: July 29, 2013

如何使用python获取此纯文本？

当我尝试在 python-3.10.1 virtualenv（使用 python-3.9.0 venv 创建并升级）中使用 PyAudio-0.2.11 播放波形文件时，我收到了一个异常，没有播放任何内容，其他的一切正常。

Exception in thread WavPlayer:rsrc/sound.wav:
Traceback (most recent call last):
  File "/usr/lib/python3.10/threading.py", line 1009, in _bootstrap_inner
    self.run()
  File "/Code/py/tetris/tetris.py", line 39, in run
    self.play()
  File "/Code/py/tetris/tetris.py", line 35, in play
    self.stream.write(data)
  File "/Code/py/tetris/.venv/lib/python3.10/site-packages/pyaudio.py", line 584, in write
    pa.write_stream(self._stream, frames, num_frames,
SystemError: PY_SSIZE_T_CLEAN macro must be defined for '#' formats

我不知道'#' format代表什么，我确信我的代码与 C API 无关，但它在 python-3.9.x 下运行良好，这是 PyAudio 库本身的问题吗？我该如何解决这个问题？

我正在尝试使用CMake为Windows构建zlib 1.2.8,但是我遇到了构建错误,我不知道如何修复.这是我的CMake GUI:

这会生成没有错误,但是当我构建生成的解决方案时.我收到此错误:

2> ------ Build build:项目:zlib,配置:发布x64 ------
2>创建库C:/Users/erik/Documents/zlib/1.2.8/project/zlib-1.2. 8-vc10/Release/zlib.lib和对象C:/Users/erik/Documents/zlib/1.2.8/project/zlib-1.2.8-vc10/Release/zlib.exp
2> inflate.obj:错误LNK2019:函数inflate中引用的未解析的外部符号inflate_fast
2> infback.obj:错误LNK2001:未解析的外部符号inflate_fast
2> C:\ Users\erik\Documents\zlib\1.2.8\project\zlib-1.2.8-vc10\Release\zlib.dll:致命错误LNK1120:1个未解析的外部

我不知道如何解决这个问题,所以我感谢任何帮助.

我想编写一个接收字典作为输入参数的函数,并返回输入字典的反转,其中原始字典的值用作返回字典的键,原始字典的键用作值的值.返回字典,如下所述:

dict = {'Accurate': ['exact', 'precise'], 
        'exact': ['precise'], 
        'astute': ['Smart', 'clever'], 
        'smart': ['clever', 'bright', 'talented']}

至

dict = {'precise': ['accurate', 'exact'], 
        'clever': ['astute', 'smart'], 
        'talented': ['smart'], 
        'bright': ['smart'],
        'exact': ['accurate'],
        'smart': ['astute']}

返回字典中的值列表应按升序排序.资本化并不重要.这意味着所有单词都应转换为小写字母.例如,单词"Accurate"在原始字典中大写,但在返回的字典中,它用所有小写字母书写.

#My code is:
from collections import defaultdict
def reverse_dictionary(input_dict):
   d = defaultdict(list)
   for v,k in input_dict.items():
       d[k].append(v)
       return d

但它返回此错误:

Error in evaluating function:
TypeError at line 6
unhashable type: 'list'

无法从Windows 7 32位操作系统上传.它在带有32/64位Python的Windows 7 64位操作系统上运行良好.我正在使用Python 3.4.3和最新的请求API.

我得到的错误是:

Traceback (most recent call last): File
"C:\Python34\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 376, in _make_request
httplib_response = conn.getresponse(buffering=True)
TypeError: getresponse() got an unexpected keyword argument 'buffering'

在处理上述异常期间,发生了另一个异常:

Traceback (most recent call last): File
"C:\Python34\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 559, in urlopen
body=body, headers=headers) File "C:\Python34\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 378, in _make_request
httplib_response = conn.getresponse() File "C:\Python34\lib\http\client.py", line 1171, in getresponse
response.begin() File "C:\Python34\lib\http\client.py", line 351, in begin
version, status, reason = self._read_status() File "C:\Python34\lib\http\client.py", line 313, in _read_status
line = str(self.fp.readline(_MAXLINE + …

在一个奇怪的事件中，我最终陷入了以下困境，我使用以下 Python 代码将 Numba 生成的程序集写入文件：

@jit(nopython=True, nogil=True)
def six():
    return 6

with open("six.asm", "w") as f:
    for k, v in six.inspect_asm().items():
        f.write(v)

汇编代码已成功写入文件，但我不知道如何执行它。我尝试了以下方法：

$ as -o six.o six.asm
$ ld six.o -o six.bin
$ chmod +x six.bin
$ ./six.bin

但是，链接步骤失败并显示以下内容：

ld: warning: cannot find entry symbol _start; defaulting to 00000000004000f0
six.o: In function `cpython::__main__::six$241':
<string>:(.text+0x20): undefined reference to `PyArg_UnpackTuple'
<string>:(.text+0x47): undefined reference to `PyEval_SaveThread'
<string>:(.text+0x53): undefined reference to `PyEval_RestoreThread'
<string>:(.text+0x62): undefined reference to `PyLong_FromLongLong'
<string>:(.text+0x74): undefined reference to `PyExc_RuntimeError'
<string>:(.text+0x88): …

Python 3.8.0最近发布（发布于20191014，可从[Python]: Python 3.8.0下载）。
PyWin32已经在[PyPI]上构建了它：pywin32 225（发布于20190915）。不幸的是，在pip installing之后，它不起作用。

样本：

[cfati@CFATI-5510-0:e:\Work\Dev\StackOverflow\q058631512]> sopr.bat
*** Set shorter prompt to better fit when pasted in StackOverflow (or other) pages ***

[prompt]> "e:\Work\Dev\VEnvs\py_064_03.07.03_test0\Scripts\python.exe"
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import win32api
>>> ^Z


[prompt]> "e:\Work\Dev\VEnvs\py_064_03.08.00_test0\Scripts\python.exe"
Python 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:37:50) [MSC v.1916 …

Run Code Online (Sandbox Code Playgroud)

在我正在使用Visual Studio(C++ 2010 Express)构建的C项目中,我使用MatLab引擎允许用户提供在项目中使用的自定义函数.问题是此代码还需要能够在没有安装MatLab的计算机上运行,​​这意味着在这种情况下计算机上将无法使用所需的DLL.当然,这应该仅在用户不尝试访问调用matlab引擎的代码段时才有效(我已为此提供了一个标志).

我有3个dll是这个场景所需要的.

• libmx.dll
• libmex.dll
• libeng.dll

到目前为止,我已经能够使用LoadLibrary和GetProcAddress在运行时加载libeng.dll .另外两个DLL有点困难,除了调用MatLab引擎的C代码之外,代码也经常被编译为mex文件(MatLab可执行文件),以允许用户从MatLab调用它.当编译为mex文件时,libmx.dll和libmex.dll都由mex编译器动态链接.这意味着使用LoadLibrary和GetProcAddress不适用于这些DLL.

现在我只是将libmx和libmex LIB添加到visual studio中的链接器属性,这样可以正常工作,但对于没有安装MatLab的人来说是不可能的.

我尝试使用delayLoad,如果我在调试模式下编译,这可行,但在我在发布模式下编译时会出现此构建错误.

1>C:\Program Files (x86)\MATLAB\R2012a\bin\win32\libmx.dll : fatal error LNK1107: invalid or corrupt file: cannot read at 0x2B8

如果没有访问使用它们的代码部分,有没有办法完全跳过查找/加载这些DLL？

这是链接器的命令行:

/OUT:"C:\Users\A.Vandenber\documents\visual studio 2010\Projects\Flash\Release\Flash.exe" /NOLOGO "C:\Program Files (x86)\MATLAB\R2012a\bin\win32\libmx.lib" "C:\Program Files (x86)\MATLAB\R2012a\bin\win32\libmex.lib" "kernel32.lib" "user32.lib" "gdi32.lib" "winspool.lib" "comdlg32.lib" "advapi32.lib" "shell32.lib" "ole32.lib" "oleaut32.lib" "uuid.lib" "odbc32.lib" "odbccp32.lib" /DELAYLOAD:"libmex.dll" /DELAYLOAD:"libmx.dll" /MANIFEST /ManifestFile:"Release\Flash.exe.intermediate.manifest" /ALLOWISOLATION /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /DEBUG /PDB:"C:\Users\A.Vandenber\documents\visual studio 2010\Projects\Flash\Release\Flash.pdb" /OPT:REF /OPT:ICF /PGD:"C:\Users\A.Vandenber\documents\visual studio …

我试图运行一个使用 ctypes 从库中获取函数的 python 代码示例。可以在此处找到示例。我按照说明进行操作，除了一个小的修改外，我还使用了完全相同的代码。我一直在尝试在 Windows 10（64 位）、python 3.7（64 位）上运行它，但收到此错误消息：

Traceback (most recent call last):
  File "C:/Users/gifr9302/PycharmProjects/testpytoc/myfunc.py", line 128, in <module>
    libmyfunc = npct.load_library('myfunc.dll', os.path.dirname(os.path.abspath(__file__)))
  File "C:\Users\gifr9302\AppData\Local\Programs\Python\Python37\lib\site-packages\numpy\ctypeslib.py", line 152, in load_library
    return ctypes.cdll[libpath]
  File "C:\Users\gifr9302\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 431, in __getitem__
    return getattr(self, name)
  File "C:\Users\gifr9302\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 426, in __getattr__
    dll = self._dlltype(name)
  File "C:\Users\gifr9302\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 356, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 193] %1 n’est pas une application Win32 valide

翻译：

OSError: [WinError 193] %1 is not …