CODEWITHSUNDEEP
python-3.xnumpysslpip
Varun Rao
Varun Rao

Reputation: 463

Installing NumPy using Pip on Windows

I downloaded Python 3.6.1 and it came with Pip preinstalled. I wrote this command to install numpy 

C:\Python36-32>python -m pip install numpy

To which I got this as the output:

Collecting numpy Could not fetch URL https://pypi.python.org/simple/numpy/: There was a problem confirming the ssl certificate: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749) - skipping Could not find a version that satisfies the requirement numpy (from versions: ) No matching distribution found for numpy

How do I solve this?
PS: I did this on Windows 10, Command Prompt running as administrator.

Upvotes: 0

Views: 12081

Answers (4)

AKS
AKS

Reputation: 17336

In my case (Dockerfile or Linux), we wanted to get pip modules installed from requirement*.txt files, which had locked-in module's versions defined in the file and fetched from an internal Artifactory server (rather than going to online i.e. pypi.org)

Ex: requirements.txt file(s)

numpy==1.16.2
pandas==1.0.3
..
...

To fix the issue: I had to use NO_PROXY=<value> available as an environment variable.

Let's say, if you artifactory server is: my-artifactory.company.local or my-artifactory.company.com, then all we need to ensure is that NO_PROXY variable has that hostname's "domain" part listed in its value.

i.e. for my-artifactory.company.com or my-artifactory.company.local, value inside

NO_PROXY variable must have: ,.company.com,.company.local,... in it.

Sample exported variable (at command line $ prompt):

export NO_PROXY=localhost,127.0.0.1,169.254.169.254,169.254.169.123,.somecompany.com,.company.com,.company.local,pki.company.com,s3-us-gov-west-1.amazonaws.com,s3-fips-us-gov-west-1.amazonaws.com,rds.amazonaws.com,10.201.12.244,10.201.44.62,10.201.32.261

====

If you are using a Dockerfile, then, ensure you have ARG/ENV variable are set correctly. ARG is used during build time (can be overridden at command line using --build-arg option sent to docker build -t tag . where it'll search current directory for a Dockerfile and create an image. ENV is used at run time (docker run) and can be overridden as well.

Sample Dockerfile is:

FROM python:3.7

MAINTAINER [email protected]

ARG PYTHONBUFFERED=0
ARG HTTPS_PROXY=http://proxy.ext.company.com:80
ARG HTTP_PROXY=http://proxy.ext.company.com:80
ARG NO_PROXY=localhost,127.0.0.1,169.254.169.254,.company.com,.company.local,pki.company.com,s3-us-gov-west-1.amazonaws.com,s3-fips-us-gov-west-1.amazonaws.com,rds.amazonaws.com

ENV PYTHONBUFFERED=${PYTHONBUFFERED}
ENV HTTPS_PROXY=${HTTPS_PROXY}
ENV HTTP_PROXY=${HTTP_PROXY}
ENV NO_PROXY=${NO_PROXY}

# If there are 3 requirements files in source control, I'm copy all for pip install, you don't have to. Use what modules you want / file you want.    
RUN mkdir -p code
COPY requirements.txt /code
COPY requirements-test.txt /code
COPY requirements-dev.txt /code

WORKDIR /code

# You can fetch from pypi.org but in my case, this was a security issue.
# RUN pip install --trusted-host pypi.org -r requirements.txt

RUN pip install --no-cache-dir --trusted-host my-artifactory.company.local -r requirements.txt -r requirements-test.txt -r requirements-dev.txt --index-url http://my-artifactory.company.local:8081/artifactory/api/pypi/pypi-local-deps/simple --disable-pip-version-check

The main line, which solved the issue in my case, was using the NO_PROXY (as listed above).

Any issues related to pip module not found, or module version not found, or any SSL errors SSLError(SSLCertVerificationError like errors, went away after applying the above NO_PROXY at cmd line or in Dockerfile:

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1091)'))': /simple/requests/

or

ERROR: Could not find a version that satisfies the requirement requests
ERROR: No matching distribution found for requests

or

ERROR: Could not find a version that satisfies the requirement numpy==1.16.2
ERROR: No matching distribution found for numpy==1.16.2

Upvotes: 0

Mwangangangi
Mwangangangi

Reputation: 1

Make sure you first add python path to your computer by checking the box with add path on your python exe.Then run pip install numpy on your command prompt.

Upvotes: 0

Suresh
Suresh

Reputation: 1

I have solved the problem using the below Command:

python.exe -m pip install numpy

For ex:

C:\Users\Suresh\AppData\Local\Programs\Python\Python37>python.exe -m pip install numpy

enter image description here

Upvotes: 0

Varun Rao
Varun Rao

Reputation: 463

I solved this problem using the following command: 

pip install numpy --index-url=http://pypi.python.org/simple/ --trusted-host pypi.python.org

This answer helped me figure it out.

Upvotes: 1

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