我有一个类(我无法控制)没有实现自己的清理。我认为这是其中一种情况weakref.finalize,但我无法让它发挥作用。
def cleanup(obj):
print('Cleanup obj')
if not obj.is_closed:
obj.close()
...
def make_obj():
obj = SomeClass()
# this creates an extra ref, so cleanup is never run
weakref.finalize(obj, cleanup, obj)
# this always results in ReferenceError; obj is already gone when cleanup is called
weakref.finalize(obj, cleanup, weakref.proxy(obj))
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难道我做错了什么?我误解了什么?
我正在处理 Elite 6.0L+ Sky 设备上的一个相当严重的恶意软件问题。我正在与恶意软件字节论坛的一位同事合作,试图将其清除。我试图通过命令提示符通过 adb 卸载一些应用程序,但它抛出错误。
adb pm shell pm uninstall com.wouzee.hispanopost
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该命令引发错误:
失败 [DELETE_FAIL_INTERNAL_ERROR]
如果我尝试将其作为
adb pm shell -k --user 0 uninstall com.wouzee.hispanopost
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然后抛出:失败[0 未安装]
我已经设法使用这些命令卸载其他东西,但是当我尝试删除它们时,我被告知要删除的两个东西都会引发这些相同的错误。
有谁知道如何解决这个问题?
我正在尝试使用我自己的标记生成器从 Huggingface 示例运行语言模型微调脚本(run_language_modeling.py)(刚刚添加了几个标记,请参阅评论)。我在加载分词器时遇到问题。我认为问题出在 AutoTokenizer.from_pretrained('local/path/to/directory') 上。
代码:
from transformers import *
tokenizer = AutoTokenizer.from_pretrained('bert-base-uncased')
# special_tokens = ['<HASHTAG>', '<URL>', '<AT_USER>', '<EMOTICON-HAPPY>', '<EMOTICON-SAD>']
# tokenizer.add_tokens(special_tokens)
tokenizer.save_pretrained('../twitter/twittertokenizer/')
tmp = AutoTokenizer.from_pretrained('../twitter/twittertokenizer/')
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错误信息:
OSError Traceback (most recent call last)
/z/huggingface_venv/lib/python3.7/site-packages/transformers/configuration_utils.py in get_config_dict(cls, pretrained_model_name_or_path, pretrained_config_archive_map, **kwargs)
248 resume_download=resume_download,
--> 249 local_files_only=local_files_only,
250 )
/z/huggingface_venv/lib/python3.7/site-packages/transformers/file_utils.py in cached_path(url_or_filename, cache_dir, force_download, proxies, resume_download, user_agent, extract_compressed_file, force_extract, local_files_only)
265 # File, but it doesn't exist.
--> 266 raise EnvironmentError("file {} not found".format(url_or_filename))
267 else:
OSError: file ../twitter/twittertokenizer/config.json not found
During …Run Code Online (Sandbox Code Playgroud) 我在 Codeforces 中遇到了一个交互问题。我想知道分级器或交互器(根据 Codeforces 的条款)是如何设计的。
假设我想为这个问题创建一个评分器:1. 猜数字。
我对上述问题的解决方案存储在1_Guess_the_Number.py文件中。这是一个正确的解决方案,并被 CF 分级机接受。
#!/usr/bin/env python3
l, r = 1, 1000000
while l != r:
mid = (l + r + 1) // 2
print(mid, flush=True)
response = input()
if response == "<":
r = mid - 1
else:
l = mid
print("!", l)
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我创建了以下grader.py文件:
#!/usr/bin/env python3
import sys
INP = 12
def interactor(n):
if n > INP:
return "<"
return ">="
while True:
guess = input()
if …Run Code Online (Sandbox Code Playgroud) 是否有替代方案signalfd(在 Mac OS X 上不可用)?我正在使用复用 I/O select,并希望以某种同步方式接收信号。
我是 python 和 Linux 的新手,对于任何混淆提前表示歉意。我正在尝试使用收集我的静态文件
python manage.py collectstatic
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但这里有一些错误是我的回溯
> Copying '/var/www/Django/myweb/static/images/test.jpg'
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
utility.execute()
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 355, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 199, in handle
collected = self.collect()
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 124, in collect
handler(path, prefixed_path, storage)
File "/home/test01/Django/VENV/local/lib/python2.7/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 364, in copy_file …Run Code Online (Sandbox Code Playgroud) 我在 MacBook 上的 IPython 解释器(IPython 7.9.0、Python 3.8.0)中运行了一个简单的多处理示例,但遇到了一个奇怪的错误。这是我输入的内容:
[In [1]: from concurrent.futures import ProcessPoolExecutor
[In [2]: executor=ProcessPoolExecutor(max_workers=1)
[In [3]: def func():
print('Hello')
[In [4]: future=executor.submit(func)
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但是,我收到以下错误:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/process.py", line 313, in _bootstrap
self.run()
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/concurrent/futures/process.py", line 233, in _process_worker
call_item = call_queue.get(block=True)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/queues.py", line 116, in get
return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'func' on <module '__main__' (built-in)>
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此外,尝试再次提交作业给了我一个不同的错误:
[In [5]: future=executor.submit(func)
---------------------------------------------------------------------------
BrokenProcessPool Traceback (most recent …Run Code Online (Sandbox Code Playgroud) 如何使用 numpy 中新的 Polynomials 子包为其提供新的 x 值并获得 y 值的输出? https://numpy.org/doc/stable/reference/routines.polynomials.package.html
在 numpy 的早期版本中,它是这样的:
poly = np.poly1d(np.polyfit(x, y, 3)
new_x = np.linspace(0, 100)
new_y = poly(new_x)
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新版本我正在努力给它 x 值,从而给我每个值的 y 值?
from numpy.polynomial import Polynomial
poly = Polynomial(Polynomial.fit(x, y, 3))
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当我给它一个 x 数组时,它只返回系数。
c 语言结构中的 AFAIK 会按照编译器认为合适的方式进行布局、对齐和填充。这就是为什么你不能依赖一个 c 程序来使用来自另一个 c 程序的结构。例如,您不能将结构另存为另一个 c 程序将读取并转换为同一个结构的二进制文件。您也许可以使用这样的打包结构,但这并不是一个很好的做法。
所以我很惊讶地发现 .so 和 DLL 文件具有将复杂结构(其引用)作为参数的 c 函数。至少我公司的产品是这样做的。这是可靠的,这是好的做法吗?是否有一些大小、对齐和填充都相同的结构布局的新标准?
我知道 64 位程序不能调用 32 位库,但我仍然认为结构布局可能因相同位的编译器而异。
#include <iostream>
using namespace std;
class Animal{
public:
virtual void cry() = 0;
void eat();
};
class Cat:public Animal
{
public:
virtual void cry();
void grooming();
};
class Dog:public Animal
{
public:
virtual void cry();
void lash();
};
main()
{
Animal* animal = new Cat();
animal->eat();
animal->cry();
Cat* cat = (Cat*)animal;
cat->grooming();
Dog* dog = new Dog();
dog->cry();
dog->eat();
dog->lash();
delete animal; //Delete called on'animal' that is abstract but has non-virtual destruct
delete cat; //Thread 1: signal SIGABRT
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