I get the following error when trying to install Punkt for nltk:
nltk.download('punkt')
[nltk_data] Error loading Punkt: <urlopen error [SSL:
[nltk_data] CERTIFICATE_VERIFY_FAILED] certificate verify failed
[nltk_data] (_ssl.c:590)>
False
TLDR: Here is a better solution: https://github.com/gunthercox/ChatterBot/issues/930#issuecomment-322111087
Note that when you run nltk.download(), a window will pop up and let you select which packages to download (Download is not automatically started right away).
To complement the accepted answer, the following is a complete list of directories that will be searched on Mac (not limited to the one mentioned in the accepted answer):
- '/Users/YOUR_USERNAME/nltk_data'
- '/usr/share/nltk_data'
- '/usr/local/share/nltk_data'
- '/usr/lib/nltk_data'
- '/usr/local/lib/nltk_data'
- '/Users/YOUR_USERNAME/YOUR_VIRTUAL_ENV_DIRECTORY/nltk_data'
- '/Users/YOUR_USERNAME/YOUR_VIRTUAL_ENV_DIRECTORY/share/nltk_data'
- '/Users/YOUR_USERNAME/YOUR_VIRTUAL_ENV_DIRECTORY/lib/nltk_data'
In case the link above dies, here is the solution pasted in its entirety:
import nltk
import ssl
try:
_create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
pass
else:
ssl._create_default_https_context = _create_unverified_https_context
nltk.download()
Run the above code in your favourite Python IDE or via the command line.
This works by disabling SSL check!
import nltk
import ssl
try:
_create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
pass
else:
ssl._create_default_https_context = _create_unverified_https_context
nltk.download()
Run the Python interpreter and type the commands:
import nltk
nltk.download()
from here: http://www.nltk.org/data.html
if you get an SSL/Certificate error, run the following command
bash /Applications/Python 3.6/Install Certificates.command
from here: ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)
Search 'Install Certificates.command' in the finder and open it.
Then do the following steps in the terminal:
python3
import nltk
nltk.download()
The downloader script is broken. As a temporal workaround can manually download the punkt tokenizer from here and then place the unzipped folder in the corresponding location. The default folders for each OS are:
Windows: C:\nltk_data\tokenizers
OSX: /usr/local/share/nltk_data/tokenizers
Unix: /usr/share/nltk_data/tokenizers
This is how I solved it for MAC OS.
Initially after installing nltk, I was getting the SSL error.
Solution:
Goto
cd /Applications/Python\ 3.8
Run the command
./Install\ Certificates.command
Now if you try again, it should work!
Thanks a lot to this article!
You just need to Install the certificate doing this simple step
In the python application folder double-click on the file 'Certificates.command'
this will make a prompt window show in your screen and basically will automatically install the certificate for you, close this window and try again.
My solution is:
Download punkt.zip from here and unzip
Create nltk_data/tokenizers folders under home folder
Put punkt folder under tokenizers folder
There is a very simple way to fix all of this as written in the formal bug report for anyone else coming across this problem recently (e.g. 2019) and using MacOS. From the bug report at https://bugs.python.org/issue28150:
...there is a simple double-clickable or command-line-runnable script ("/Applications/Python 3.6/Install Certificates.command") that does two things: 1. uses pip to install certifi and 2. creates a symlink in the OpenSSL directory to certifi's installed bundle location.
Simply running the "Install Certificates.command" script worked for me on MacOS (10.15 beta as of this writing) and I was off and running.
My solution after nothing worked. I navigated, via the GUI to the Python 3.7 folder, opened the 'Certificates.command' file in terminal and the SSL issue was immediately resolved.
A bit late to the party but I just entered Certificates.command into Spotlight which found it and ran it. All fixed in seconds.
I'm running mac Catalina and using python 3.7 installed by Homebrew
It means that you are not using HTTPS to work consistently with other run time dependencies for Python etc.
If you are using Linux (Ubuntu)
~$ sudo apt-get install ca-certificates
Should solve the issue.
If you are using this in a script with a docker file, you have to make sure you have install the the ca-certificates modules in your docker file.
For mac users,
just copy paste the following in the terminal:
/Applications/Python\ 3.10/Install\ Certificates.command ; exit;
First go to the path /Applications/Python 3.6/ and run
Install Certificates.command
You will admin rights for the same.
If you are unable to download it, then as other answer suggest you can download directly and place it. You need to place them in the following directory structure.
> nltk_data
> corpora
> brown
> conll2000
> movie_reviews
> wordnet
> taggers
> averaged_perceptron_tagger
> tokenizers
> punkt
Updating the python certificates worked for me.
At the top of your script, keep:
import nltk
nltk.download('punkt')
In a separate terminal run (Mac):
bash /Applications/Python <version>/Install Certificates.command
For me, the solution was much simpler: I was still connected to my corporate network/VPN which blocks certain types of downloads. Switching the network made the SSL error disappear.
I want to import requests library and bs4 in pycharm but I got( no module )
and as i click install package I got error
It recommend to update pip 20 to 21 but when I want to upgrade pip in scripts folder I got invalid syntax error
Based on
certificate verify failed: certificate not yet valid
I'm pretty certain that your computer's clock is incorrect. Check that first. If that's not the case, there might be a broken MITM SSL proxy in the way, which we can't do much about.
As for your problem upgrading Pip, you have a typo. You'll want --upgrade, not -upgrade. However, that's likely to fail too if you can't establish connections to the server hosting Python packages (including Pip).
I'm using Python 3.8 on macos. I also have Python 3.5 and 2.7 on this machine.
I'm trying to connect to adwords.google.com using the following snippet:
import ssl, socket
context = ssl.create_default_context()
conn = context.wrap_socket(
socket.socket(socket.AF_INET),
server_hostname="adwords.google.com"
)
conn.connect(("adwords.google.com", 443))
cert = conn.getpeercert()
but I always receive the following error:
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate
Running ssl.OPENSSL_VERSION I receive:
'OpenSSL 1.1.1g 21 Apr 2020'
What is weird is that if I run the same ssl connection snippet on either Python 3.5 or Python 2.7, the connection works. This happens ONLY on Python 3.8.
Why does that happen? Any ideas?
I found an answer reading this article and this question on SO: Django 1.11: Python 3.6 Upgrade causes issues with SSL connections.
Since Python 3.6, [...] the deprecated Apple-supplied OpenSSL libraries are no longer used. This also means that the trust certificates in system and user keychains managed by the Keychain Access application and the security command line utility are no longer used as defaults by the Python ssl module. For 3.6.0, a sample command script is included in /Applications/Python 3.6 to install a curated bundle of default root certificates from the third-party certifi package (https://pypi.python.org/pypi/certifi) [...]
So, I just ran sh /Applications/Python\ 3.8/Install\ Certificates.command, certifi was properly installed and the ssl connection worked as well.
I am trying to use the following code, on Speedtest API
def get_bytes(self):
s = speedtest.Speedtest()
s.get_best_server()
s.download()
s.upload()
res = s.results.dict()
print(res["download"], res["upload"], res["ping"])
However I am facing some problems with this connection. All the times I am receiving this error.
speedtest.ConfigRetrievalError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)>
I am using Python 3.7 on a MacOS Mojave and already tried to update the certifi on virtualenv
Do you have any idea?
I guys, finally I found the error.
In this case, you need to install the certifications on your machines.
The certification are:
MacintoshHD > Applications > Python 3.7 > Install Certificates.command
Double click on certifications and its going to work this solution.
Homebrew's speedtest-cli seems to use Python 2.7. I could not figure out how to fix the certificates, but found this workaround:
$ python3 /usr/local/bin/speedtest
I'm currently trying to use the sleekxmpp module in Python3.5 to connect to jabber.at, an XMPP service. Jabber.at's SSL certificates are issued by Let's Encrypt.
The problem I'm having is, when I try to log in to my jabber.at account using sleekxmpp, I get the following error:
INFO Negotiating TLS
INFO Using SSL version: TLSv1
ERROR Certificate has expired.
I've tried to resolve this issue on Ubuntu 16.04, Manjaro GNOME 17, and Windows 10, with a fresh installation of Python, sleekxmpp, and all of sleekxmpp's dependencies, on each of those machines. It didn't make a difference.
On each of my machines, I have the Let's Encrypt Authority X3 certificate installed, yet sleekxmpp still thinks the certificate is expired, even though the certificate is valid until 2022. Frustratingly, I'm able to log in to my XMPP account using Pidgin, and the certificate automatically saved by Pidgin (which you can find under ~/.purple/ in Linux) is exactly the same as the one I downloaded directly from Let's Encrypt.
I've tried manually changing the ssl version in sleekxmpp.xmlstream.xmlstream.py:125 to ssl.PROTOCOL_SSLv23, but that didn't work, either. I've also tried manually specifying the path to the Let's Encrypt .crt file in sleekxmpp.xmlstream.xmlstream.py:140, but I still have the same issue.
I should note that I do have dnspython, pyasn1, and pyasn1_modules installed on each machine. While I can successfully log into my jabber.at account by either uninstalling pyasn1, or explicitly ignoring certificates by setting sleekxmpp.xmlstream.xmlstream.py:140 to None, that isn't a solution in my case - I must encrypt my connection.
Is there anything I can do? I've been at this for days now, and I haven't been able to find any helpful solutions on Google.
I appreciate any help!
After over a month, I was able to find a solution to my own problem.
It turns out that this issue is caused by a regression in SleekXMPP, introduced in version 1.3.3:
GitHub: Regression from 1.3.1
It was only recently addressed, but as of now, there is no official release with the fix. The short-term solution to this problem is to uninstall SleekXMPP, and re-install SleekXMPP, specifying version 1.3.1:
sudo pip3 uninstall sleekxmpp
sudo pip3 install sleekxmpp==1.3.1
Reverting to version 1.3.1 solves this issue for me. Perhaps this will no longer be an issue in SleekXMPP 1.3.4.