How to Solve error: InsecurePlatformWarning: A true SSLContext object is not available.
apt-get install libffi-dev libssl-dev(if not installed before, restart after installation)pip install requests[security] or pip install pyopenssl ndg-httpsclient pyasn1In python 2.7.6 through the requests library, if you request an https address, an error will be reported:[Errno 1] _ssl.c:510: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure
Error reminder: sslv3 handshake error
pip install requests[security]But these three libraries are missing: pyOpenSSL, ndg-httpsclient, pyasn1
Error message: setuptools pip wheel failed with error code 1
Solution:
export LC_ALL=en_US.UTF-8,export LANG=en_US.UTF-8export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8Failed to install icu via pip under Mac.
The cause of the problem is that a certain line of code in the icu library cannot find a file and cannot get ICU_VERSIONthe value.
# Install icu
brew install icu4c
# check newest version
ls /usr/local/Cellar/icu4c/
# Edit pyicu installer to work
git clone https://github.com/ovalhub/pyicu.git
# edit setup.py not to query for the version, i.e. change
# ICU_VERSION = subprocess.check_output(('icu-config', '--version')).strip()
# to whatever your version is, e.g.
# ICU_VERSION = '57'
# Install pyicu
env LDFLAGS=-L/usr/local/opt/icu4c/lib CPPFLAGS=-I/usr/local/opt/icu4c/include DYLD_LIBRARY_PATH=-L/usr/local/opt/icu4c/lib python setup.py build
env LDFLAGS=-L/usr/local/opt/icu4c/lib CPPFLAGS=-I/usr/local/opt/icu4c/include DYLD_LIBRARY_PATH=-L/usr/local/opt/icu4c/lib sudo python setup.py install
# Change DYLD_LIBRARY_PATH (not sure if req'd)
DYLD_LIBRARY_PATH=/usr/local/Cellar/icu4c/57.1/:$DYLD_LIBRARY_PATH
echo $DYLD_LIBRARY_PATH
# Icu works now from python, and you can proceed with polyglot
$ python
>>> import icu
$ pip install polyglot
$ python
>>> import polyglot
This error is usually caused by multiple ssh key verifications. Too many keys cause the server to refuse to accept the authentication request.
By -vparameters, output detailed process. You will find the authentication key you provided, the server refused the link, and prompted an exception: “Too many authentication failures for [user]”.
ssh-add -D
This is usually caused by inadvertently offering multiple ssh keys to the server. The server will reject any key after too many keys have been offered.
You can see this for yourself by adding the -v flag to your ssh command to get verbose output. You will see that a bunch of keys are offered, until the server rejects the connection saying: “Too many authentication failures for [user]”. Without verbose mode, you will only see the ambiguous message “Connection reset by peer”.
To prevent irrelevant keys from being offered, you have to explicitly specify this in every host entry in the ~/.ssh/config file by adding IdentitiesOnly like so:
Host www.somehost.com
IdentityFile ~/.ssh/key_for_somehost_rsa
IdentitiesOnly yes
Port 22
If you use the ssh-agent, it helps to run ssh-add -D to clear the identities.
If you are not using any ssh hosts configuration, you have to explicitly specify the correct key in the ssh command like so:
ssh -i some_id_rsa -o 'IdentitiesOnly yes' them@there:/path/
Note: the ‘IdentitiesOnly yes’ parameter needed to be between quotes.
or
ssh -i some_id_rsa -o IdentitiesOnly=yes them@there:/path/
First of all, this is not an exception of the Flask library. This error often appears in Python2.
The problem is: the problem with the SocketServer module in Python2.
Solution:
runAdd in the method, threadedparameters:app.run(threaded=True)
Error message:
File "/usr/lib/python2.7/site-packages/urllib3/util/__init__.py", line 4, in <module>
from .request import make_headers
File "/usr/lib/python2.7/site-packages/urllib3/util/request.py", line 5, in <module>
from ..exceptions import UnrewindableBodyError
ImportError: cannot import name UnrewindableBodyError
Solution, reloading urllib3library:
pip uninstall urllib3
pip install urllib3Git Push stuck in ‘writing objects’
How to Solve this issue?
Solution:git config --global http.postBuffer 524288000
Apache’s drill executes the startup command drill-embedded
Error: ERROR: Java 1.7 or later is required to run Apache Drill.
By java -versioncommand to view the version information is as follows:
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
Open the bin directory of drill drill-config.shmodify the behavior of 396:
"$JAVA" -version 2>&1 | grep "version" | egrep -e "1/.4|1/.5|1/.6" > /dev/null
Dril problem lies in the drill-config.shscript is a positive match jdk version, no decimal ‘.’ Escape.
The root cause of this problem first is that the requested target website no longer supports TLS versions 1.0 and 1.1.
curl https://bootstrap.pypa.io/get-pip.py | python. Note that because of the issue of the certificate authentication protocol version, it cannot be upgraded through the pip upgrade command. (The Python.org website has stopped supporting TLS versions 1.0 and 1.1)pip install -U pyopenssl.sudo pip install --upgrade pip virtualenv virtualenvwrapper“…Library not loaded: libmysqlclient.18.dylib
Referenced from: …ython2.7/site-packages/_mysql.so
Reason: image not found”
After upgrading MySQL, libmysqlclient.18.dylib becomes libmysqlclient.20.dylib.
Find mysql lib under the installation path of libmysqlclient.20.dylibestablishing a soft connection.
sudo ln -s /usr/local/mysql/lib/libmysqlclient.20.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib