如何在gevent中制作经典计时器？
我目前正在使用gevent.spawn_later,但有没有办法像使用cron那样使用core.timer来说"在间隔上做回调"？
def callback():
# do something
print '!'
timer = core.timer(10, callback)
timer.start()
outpout:
0s
10s !
20s !
30s !
如果它们适合某种URL模式(例如,不是一组给定的URL),我想自动打印chrome窗口(没有对话框).
你能用苹果脚本吗？有人可以分享一个例子吗？(我没有Mac,所以我无法真正尝试自己)
什么是迭代无序对元素的简洁方法unordered_set？
(所以顺序无关紧要,元素应该不同)
例如{1,2,3} =>(1,2)(2,3)(1,3)
我最初的尝试是类似的
for (i = 0; i < size - 1; i++) {
for (j = i + 1; j < size; j++) {
...
}
}
但是对于迭代器来说这并不是非常方便.
from plotly import optional_imports
from distutils.version import LooseVersion
import plotly.express as px
# Proof that nbformat is installed.
assert not (not nbformat or LooseVersion(nbformat.__version__) < LooseVersion("4.2.0"))
fig = px.scatter(x=[0, 1, 2, 3, 4], y=[0, 1, 4, 9, 16])
fig.show()
给出
ValueError Traceback (most recent call last)
/tmp/ipykernel_898/3832418673.py in <module>
7
8 fig = px.scatter(x=[0, 1, 2, 3, 4], y=[0, 1, 4, 9, 16])
----> 9 fig.show()
/opt/conda/envs/python39/lib/python3.9/site-packages/plotly/basedatatypes.py in show(self, *args, **kwargs)
3396 import plotly.io as pio
3397
-> 3398 return …我正在尝试根据已完成任务的结果提交更多任务：
with concurrent.futures.ThreadPoolExecutor() as executor:
future = executor.submit(my_task)
def callback(future):
for another_task in future.result():
future = executor.submit(another_task)
future.add_done_callback(callback)
future.add_done_callback(callback)
但我得到：
运行时错误：关闭后无法安排新的期货
让执行者保持回调的最佳方法是什么？信号量？
理想情况下，如果ThreadPoolExecutor替换为ProcessPoolExecutor.
为什么tap运算符要改变 的类型someVar？
根据定义，它不应该。
这会改变类型：
somevar = someObs$.pipe(
tap(console.log)
)
这不会：
somevar = someObs$.pipe(
tap((v) => console.log(v))
)
在 R 中：如何在不使用循环的情况下对矩阵的每个元素执行对数运算？
我有一个矩阵 m，我希望每个元素都被它的对数替换。log(m) 不起作用。
params = array(list(),c(2, 2))
然后我手动设置所有元素。
params
[,1] [,2]
[1,] 3 3
[2,] 3 3
log(params)
log(params) 中的错误：数学函数的非数字参数
我正在尝试在这里进行python教程 http://code.google.com/appengine/docs/python/gettingstarted/helloworld.html
(我安装了python 2.5)
创建python和yaml文件后,我使用app引擎启动器来运行代码.然后我检查了localhost:8080并收到以下错误:
<class 'google.appengine.tools.dev_appserver.AppConfigNotFoundError'> Python 2.5: C:\Python25\pythonw.exe
Sat Apr 02 17:15:11 2011
A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.
C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py in _HandleRequest(self=<google.appengine.tools.dev_appserver.DevAppServerRequestHandler instance at 0x02CF0D50>)
3837 config, explicit_matcher = LoadAppConfig(root_path, self.module_dict,
3838 cache=self.config_cache,
3839 static_caching=static_caching)
3840 if config.api_version != API_VERSION:
3841 logging.error(
static_caching = True
C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py in LoadAppConfig(root_path=r'C:\Users\Uri\Dropbox\memory-graph\memory-graph', module_dict={'codecs': <module 'codecs' from 'C:\Python25\lib\codecs.pyc'>, 'email': <module 'email' from 'C:\Python25\lib\email\__init__.pyc'>, …我正在尝试使用新的fbsr _ {{appID}} Cookie.
我正在使用以下函数来解析它,但是当我尝试获取access_token之后,我收到'验证验证码错误'消息.这些解析函数有问题吗？如果没有,可能是什么问题？
更多信息:我设法使用oauth链接在没有cookie的情况下登录用户,该链接以代码作为参数重定向回我的网站,因此它不能是app id,app secret或redirect_uri.另一个原因是它们有不同的错误信息.
def base64_url_decode(inp):
padding_factor = (4 - len(inp) % 4) % 4
inp += "="*padding_factor
return base64.b64decode(unicode(inp).translate(dict(zip(map(ord, u'-_'), u'+/'))))
def parse_signed_request(signed_request, secret):
l = signed_request.split('.', 2)
encoded_sig = l[0]
payload = l[1]
sig = base64_url_decode(encoded_sig)
data = json.loads(base64_url_decode(payload))
if data.get('algorithm').upper() != 'HMAC-SHA256':
logging.error('Unknown algorithm')
return None
else:
expected_sig = hmac.new(secret, msg=payload, digestmod=hashlib.sha256).digest()
if sig != expected_sig:
return None
else:
logging.debug('valid signed request received..')
return data
args = {}
args['client_id'] = fbapp_id
args['redirect_uri'] = …我有这个版本适用于Android 4(String email是一个Gmail地址):
private Uri getPhotoUriFromEmail(String email) {
Uri u = null;
String[] projection = { ContactsContract.CommonDataKinds.Email.PHOTO_URI };
String photoUri;
ContentResolver cr = context.getContentResolver();
Cursor emailCur = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, projection,
ContactsContract.CommonDataKinds.Email.ADDRESS + " = ?",
new String[]{email}, null);
if (emailCur.moveToNext()) {
photoUri = emailCur.getString(
emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.PHOTO_URI));
u = Uri.parse(photoUri);
}
return u;
}
什么是2.3.6版本？(当我将API 8设置为我的最小API支持时,Android SDK也不应该警告我使用API 11吗？因为它没有...)
L = {ww | w属于{0,1}*}的补语的CFG是多少？
我的应用程序拒绝部署,只是写道
检查部署是否成功.
将在60秒内再次检查.
一遍又一遍,然后超时.
这是我的.bat文件:
python"C:\ Program Files(x86)\ Google\google_appengine\appcfg.py"--email = my email --passin update"app directory"
我的网络连接正常.有任何想法吗？
完整错误:
2013-02-02 21:01:22,963 WARNING appcfg.py:2053 Version still not ready to serve,
aborting.
2013-02-02 21:01:22,966 ERROR appcfg.py:2267 An unexpected error occurred. Abort
ing.
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\ap
pcfg.py", line 2253, in DoUpload
app_summary = self.Commit()
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\ap
pcfg.py", line 2054, in Commit
raise Exception('Version not ready.')
Exception: Version not ready.
09:01 PM Rolling back the update.
Traceback (most …我收到了来自GCM的消息,但我得到了字符串而不是布尔值.似乎问题在于我的JSON数组.我收到警告信息:
04-17 00:41:04.058: W/Bundle(6702): Key alarm expected Boolean but value was a java.lang.String. The default value false was returned.
04-17 00:41:04.058: W/Bundle(6702): Attempt to cast generated internal exception:
04-17 00:41:04.058: W/Bundle(6702): java.lang.ClassCastException: java.lang.String
04-17 00:41:04.058: W/Bundle(6702): at android.os.Bundle.getBoolean(Bundle.java:786)
04-17 00:41:04.058: W/Bundle(6702): at android.content.Intent.getBooleanExtra(Intent.java:3282)
04-17 00:41:04.058: W/Bundle(6702): at com.rolandas.lookup.GCMIntentService.onMessage(GCMIntentService.java:71)
04-17 00:41:04.058: W/Bundle(6702): at com.google.android.gcm.GCMBaseIntentService.onHandleIntent(GCMBaseIntentService.java:223)
04-17 00:41:04.058: W/Bundle(6702): at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:59)
04-17 00:41:04.058: W/Bundle(6702): at android.os.Handler.dispatchMessage(Handler.java:99)
04-17 00:41:04.058: W/Bundle(6702): at android.os.Looper.loop(Looper.java:130)
04-17 00:41:04.058: W/Bundle(6702): at android.os.HandlerThread.run(HandlerThread.java:60)
PHP发送脚本.
$devices = array();
$data = array(); …