Comments (27)
It seems that this made it work again:
(1) I created two new user environment variables:
- SSL_CERT_DIR with path to C:\Program Files (x86)\Common Files\SSL\certs
- SSL_CERT_FILE C:\Program Files (x86)\Common Files\SSL/cert.pem
(2) Created SSL directory in C:\Program Files (x86)\Common Files
(3) Created certs directory in C:\Program Files (x86)\Common Files\SSL
(4) installed certifi with pip install certifi
(5) Found the pem file from certifi:
import certifi
certifi.where()
'C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\certifi\cacert.pem'
(6) Copied the cacert.pem file to C:\Program Files (x86)\Common Files\SSL/ directory.
(7) Changed its name to cert.pem
I don't know much about certificates or SSL, but it seems that python somehow lost its information about certificates.
Now it works, cheers!
from python-bittrex-websocket.
Paste your modified code.
from python-bittrex-websocket.
`from bittrex_websocket.websocket_client import BittrexSocket
from time import sleep
def main():
class MySocket(BittrexSocket):
def on_public(self, msg):
name = msg['M']
if name not in ticker_updates_container:
ticker_updates_container[name] = msg
print('Just received market update for {}.'.format(name))
# Create container
ticker_updates_container = {}
# Create the socket instance
ws = MySocket()
# Enable logging
ws.enable_log()
# Define tickers
tickers = ['BTC-ETH', 'BTC-NEO', 'BTC-ZEC', 'ETH-NEO', 'ETH-ZEC']
# Subscribe to ticker information
for ticker in tickers:
sleep(0.01)
ws.subscribe_to_exchange_deltas([ticker])
# Users can also subscribe without introducing delays during invoking but
# it is the recommended way when you are subscribing to a large list of tickers.
# ws.subscribe_to_exchange_deltas(tickers)
while len(ticker_updates_container) < len(tickers):
sleep(1)
else:
print('We have received updates for all tickers. Closing...')
ws.disconnect()
sleep(10)
if name == "main":
main()`
Current code I've got.
Output:
2018-08-06 10:59:04 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-06 10:59:04 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled.
2018-08-06 10:59:08 - bittrex_websocket.websocket_client - ERROR -
Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.
2018-08-06 10:59:14 - bittrex_websocket.websocket_client - ERROR - Connection timeout after 10 seconds. Sending a reconnection signal.
Exception in thread ControlQueueThread:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 80, in control_queue_handler
self._handle_subscribe(event)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 180, in _handle_subscribe
self.invokes.append({'invoke': event.invoke, 'ticker': event.payload[0][0]})
AttributeError: 'CloseEvent' object has no attribute 'invoke'
from python-bittrex-websocket.
Sorry for the late reply, what version are you using? Where did you pass the SSL params?
from python-bittrex-websocket.
I've just updated to 1.0.6.2 today from pip. I'm not currently passing any SSL params, so I've just copied the code from the first example here under quick start: https://github.com/slazarov/python-bittrex-websocket
2018-08-30 07:13:15 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr. 2018-08-30 07:13:15 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled. 2018-08-30 07:13:16 - bittrex_websocket.websocket_client - ERROR - Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>. Auto-reconnection is disabled for unhandled exceptions. Report to https://github.com/slazarov/python-bittrex-websocket.
from python-bittrex-websocket.
from python-bittrex-websocket.
Just looking to try to do that. Looking at trying to install the extra in case it wasn't there:
Requirement already satisfied: requests[security] in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (2.19.1) Requirement already satisfied: urllib3<1.24,>=1.21.1 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (1.22) Requirement already satisfied: idna<2.8,>=2.5 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (2.5) Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (3.0.4) Requirement already satisfied: certifi>=2017.4.17 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (2017.7.27.1) Requirement already satisfied: cryptography>=1.3.4; extra == "security" in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (2.1.4) Requirement already satisfied: pyOpenSSL>=0.14; extra == "security" in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (17.5.0) Requirement already satisfied: asn1crypto>=0.21.0 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cryptography>=1.3.4; extra == "security"->requests[security]) (0.24.0) Requirement already satisfied: cffi>=1.7; platform_python_implementation != "PyPy" in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cryptography>=1.3.4; extra == "security"->requests[security]) (1.11.2) Requirement already satisfied: six>=1.4.1 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cryptography>=1.3.4; extra == "security"->requests[security]) (1.11.0) Requirement already satisfied: pycparser in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cffi>=1.7; platform_python_implementation != "PyPy"->cryptography>=1.3.4; extra == "security"->requests[security]) (2.18) polyaxon 0.0.33 has requirement numpy==1.13.1, but you'll have numpy 1.14.5 which is incompatible. polyaxon-schemas 0.0.15 has requirement numpy==1.13.1, but you'll have numpy 1.14.5 which is incompatible. nbconvert 5.3.1 has requirement nbformat>=4.4, but you'll have nbformat 4.3.0 which is incompatible. kubernetes 3.0.0 has requirement websocket-client<=0.40.0,>=0.32.0, but you'll have websocket-client 0.48.0 which is incompatible. bittrex-websocket 1.0.6.2 has requirement requests[security]==2.18.4, but you'll have requests 2.19.1 which is incompatible.
from python-bittrex-websocket.
Just set up a clean new install in a fresh venv, same issue:
(venv) Davids-MacBook-Pro:accounting david$ python market_monitor.py
2018-08-30 17:25:50 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 17:25:51 - bittrex_websocket.websocket_client - ERROR -
Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.
I installed requests and requests[security]. Thanks,
David
from python-bittrex-websocket.
Hey David, let's do the following so at least we could replicate each other:
Note: I am using python3.7 in this case.
mkdir ~/test
cd ~/test
virtualenv venv/.
source venv/bin/activate
curl https://raw.githubusercontent.com/slazarov/python-bittrex-websocket/master/examples/ticker_updates.py -o ticker_updates.py
python ticker_updates.py
I get the following output, what do you get?
(venv) bash-3.2$ python ticker_updates.py
2018-08-30 12:30:21 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ETH].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-NEO].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ZEC].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-NEO].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-ZEC].
Just received market update for BTC-NEO.
Just received market update for ETH-ZEC.
Just received market update for BTC-ZEC.
Just received market update for BTC-ETH.
Just received market update for ETH-NEO.
We have received updates for all tickers. Closing...
2018-08-30 12:30:25 - bittrex_websocket.websocket_client - INFO - Bittrex connection successfully closed.
from python-bittrex-websocket.
That worked. The one thing I had to do that wasn't in your instructions was pip install bittrex_websocket. After doing that, I got this:
(venv) Davids-MacBook-Pro:test david$ python ticker_updates.py
2018-08-30 19:38:14 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ETH].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-NEO].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ZEC].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-NEO].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-ZEC].
Just received market update for ETH-ZEC.
Just received market update for BTC-NEO.
Just received market update for BTC-ETH.
Just received market update for BTC-ZEC.
Just received market update for ETH-NEO.
We have received updates for all tickers. Closing...
2018-08-30 19:38:20 - bittrex_websocket.websocket_client - INFO - Bittrex connection successfully closed.
So definitely and issue with my environment, including the new one i installed. Going to try an uninstall and reinstall. Thanks for your help.
from python-bittrex-websocket.
Glad that it's working. Upon solving your issue, please leave a note here for future reference.
With respect to installation, check this page:
https://python-bittrex-websocket-docs.readthedocs.io/en/latest/installation.html
Note: Usually the GitHub versions are slightly ahead in terms of commits than the PyPi versions..
from python-bittrex-websocket.
Hi there,
I don't have the same error, but I feel it's relevant to this topic
One thing to note - I am using commit
I followed your above instructions and ran python ticker_updates.py and got this
(venv) tapestry140:collina bogdan.culda$ venv/bin/python3 ticker_updates.py
2018-08-30 17:01:49 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 17:01:49 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled.
2018-08-30 17:01:50 - bittrex_websocket.websocket_client - ERROR -
Unhandled Exception = <class 'gevent.hub.LoopExit'>, Message = <('This operation would block forever', <Hub at 0x105b54f20 select pending=0 ref=0>)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.
2018-08-30 17:01:59 - bittrex_websocket.websocket_client - ERROR - Connection timeout after 10 seconds. Sending a reconnection signal.
Exception in thread ControlQueueThread:
Traceback (most recent call last):
File "/usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/Users/bogdan.culda/Desktop/workspace/collina/venv/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 80, in control_queue_handler
self._handle_subscribe(event)
File "/Users/bogdan.culda/Desktop/workspace/collina/venv/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 182, in _handle_subscribe
self.invokes.append({'invoke': event.invoke, 'ticker': identify_payload(event.payload)})
Any thougths ? Thanks
from python-bittrex-websocket.
OK my mistake - I've recreated my environment from scratch and it's fixed now.
from python-bittrex-websocket.
I've not yet solved this, but I've noted something towards it. The virtualenv command seems to have set up a python 2.7 environment, and then doing pip install bittrex-websocket installed everything I needed. When I'm trying to do my actual development environment, I'm creating it with python3 -m venv venv. This creates a python 3.6 environment. In there if I run pip install bittrex-websocket, I get the issue I've had all along. So some dependancy that is needed to get this to work in python 3 seems to be missing. Not sure what it is yet though.
from python-bittrex-websocket.
Forgot to mention, I used python3 / pip3 to install everything as well.
from python-bittrex-websocket.
has anyone solved this? I'm getting the same error since yesterday... Didn't change anything.
SSL handshake failed on verifying the certificate
protocol: <asyncio.sslproto.SSLProtocol object at 0x14434D90>
transport: <_SelectorSocketTransport fd=1572 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 625, in _on_handshake_complete
raise handshake_exc
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata
self._sslobj.do_handshake()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1051)
SSL error in data received
from python-bittrex-websocket.
Run it in a clear venv. You shouldn’t be getting asyncio errors, this library does not support asyncio.
from python-bittrex-websocket.
oh sry, I'm using bittrex-websocket-aio. Wrong thread ...
I tried running it in a clear env, I get the same thing. Literally didn't change or do anything in the past 2 days. Tried running it last night and got this. Also, reinstalled python to 3.7.2, same
Complete error:
SSL handshake failed on verifying the certificate
protocol: <asyncio.sslproto.SSLProtocol object at 0x12D09CF0>
transport: <_SelectorSocketTransport fd=1336 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 625, in _on_handshake_complete
raise handshake_exc
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata
self._sslobj.do_handshake()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)
SSL error in data received
protocol: <asyncio.sslproto.SSLProtocol object at 0x12D09CF0>
transport: <_SelectorSocketTransport closing fd=1336 read=idle write=<idle, bufsize=0>>
Traceback (most recent call last):
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 526, in data_received
ssldata, appdata = self._sslpipe.feed_ssldata(data)
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata
self._sslobj.do_handshake()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)
Exception in thread SocketConnectionThread:
Traceback (most recent call last):
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\threading.py", line 917, in _bootstrap_inner
self.run()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\bittrex_websocket\websocket_client.py", line 82, in _connection_handler
self.connection.conn.start()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\signalr_aio_connection.py", line 36, in start
self.__transport.start()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\signalr_aio\transports_transport.py", line 47, in start
self.ws_loop.run_until_complete(self.socket(self.ws_loop))
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\base_events.py", line 584, in run_until_complete
return future.result()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\signalr_aio\transports_transport.py", line 59, in socket
loop=loop) as self.ws:
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\websockets\py35\client.py", line 2, in aenter
return await self
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\websockets\py35\client.py", line 12, in await_impl
transport, protocol = await self._creating_connection
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\base_events.py", line 986, in create_connection
ssl_handshake_timeout=ssl_handshake_timeout)
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\base_events.py", line 1014, in _create_connection_transport
await waiter
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 526, in data_received
ssldata, appdata = self._sslpipe.feed_ssldata(data)
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata
self._sslobj.do_handshake()
File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)
from python-bittrex-websocket.
from python-bittrex-websocket.
I tried running it in a clear venv, same results. What could be the reason for sudden certificate error? I guess it is a local issue, but really don't know where to start searching. The command that lists the python certificates path gives this:
python -c "import ssl; print(ssl.get_default_verify_paths())"
DefaultVerifyPaths(cafile=None, capath=None, openssl_cafile_env='SSL_CERT_FILE', openssl_cafile='C:\Program Files (x86)\Common Files\SSL/cert.pem', openssl_capath_env='SSL_CERT_DIR', openssl_capath='C:\Program Files (x86)\Common Files\SSL/certs')
These directories don't exist.
from python-bittrex-websocket.
from python-bittrex-websocket.
I'm getting the same error message as well. I tried running the example ticker_updates.py and get the following error messages.
I also created a new venv, and did pip install bittrex_websocket. Still getting the same error message.
python ticker_updates.py
2019-01-21 20:12:49 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2019-01-21 20:12:50 - bittrex_websocket.websocket_client - ERROR -
Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:748)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.
2019-01-21 20:12:59 - bittrex_websocket.websocket_client - ERROR - Connection timeout after 10 seconds. Sending a reconnection signal.
Exception in thread ControlQueueThread:
Traceback (most recent call last):
File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\threading.py", line 916, in _bootstrap_inner
self.run()
File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\site-packages\bittrex_websocket\websocket_client.py", line 80, in control_queue_handler
self._handle_subscribe(event)
File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\site-packages\bittrex_websocket\websocket_client.py", line 184, in _handle_subscribe
self.invokes.append({'invoke': event.invoke, 'ticker': identify_payload(event.payload)})
AttributeError: 'CloseEvent' object has no attribute 'invoke'
from python-bittrex-websocket.
I've suddenly started getting this too, have had my program running 24/7 for months and months without issue until now. Very strange! Haven't changed my python env in any way recently either.
from python-bittrex-websocket.
I can confirm that the steps provided by @goshetovan appear to fix the problem for me. Perhaps it's an issue with the default SSL certificates, I recall seeing a similar issue in the CCXT library.
from python-bittrex-websocket.
I can confirm that the steps provided by @goshetovan appear to fix the problem for me. Perhaps it's an issue with the default SSL certificates, I recall seeing a similar issue in the CCXT library.
Thanks. I'll try those steps as well.
from python-bittrex-websocket.
I will look into this. Glad you found a workaround.
from python-bittrex-websocket.
@slazarov The SSL issue for python2.7 could be fixed by passing sslopt parameter with ssl.CERT_NONE.
self.ws = create_connection(ws_url, header=self.__get_headers(), cookie=self.__get_cookie_str(), sslopt={"cert_reqs": ssl.CERT_NONE}, enable_multithread=True)
You can update your signalr library to solve the SSL issue. Just update file in signalr/transports/_ws_transport.py. btw, do not forget import ssl.
Thanks for your work for bittrex websocket!
from python-bittrex-websocket.
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JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
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web
Some thing interesting about web. New door for the world.
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server
A server is a program made to process requests and deliver data to clients.
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Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
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Visualization
Some thing interesting about visualization, use data art
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Game
Some thing interesting about game, make everyone happy.
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Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
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Microsoft
Open source projects and samples from Microsoft.
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Google
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D3
Data-Driven Documents codes.
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China tencent open source team.
from python-bittrex-websocket.