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I am trying to install RPi.GPIO for Python 3.6 on my Raspberry Pi Zero W, but somehow it won't connect to the python.org website. I have pip installed for 2.7, 3.0, and 3.6 installed, so when I go and do something like:
sudo pip3.6 install RPi.GPIO
I get this error:
pi@raspberrypi:~ $ sudo pip3.6 install RPi.GPIO
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting RPi.GPIO
Could not fetch URL https://pypi.python.org/simple/rpi-gpio/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
Could not find a version that satisfies the requirement RPi.GPIO (from versions: )
No matching distribution found for RPi.GPIO
I did try sudo apt-get install openssl and so on, but it still doesn't work. I can access the website perfectly on my desktop and phone, but my Raspberry Pi won't at all. Any idea what I can do?
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The problem can be caused by DLLs in the Windows\System32 folder (e.g. libcrypto-1_1-x64. dll or libssl-1_1-x64. dll or others) placed there by other software. The fix was installing openSSL from https://slproweb.com/products/Win32OpenSSL.html which replaces the dlls by more recent versions.
You can ignore SSL errors by setting pypi.org and files.pythonhosted.org as well as the older pypi.python.org as trusted hosts. Note: Sometime during April 2018, the Python Package Index was migrated from pypi.python.org to pypi.org .
This module provides access to Transport Layer Security (often known as “Secure Sockets Layer”) encryption and peer authentication facilities for network sockets, both client-side and server-side.
Ensure you can run pip from the command line Run python get-pip.py . 2 This will install or upgrade pip. Additionally, it will install setuptools and wheel if they're not installed already. Be cautious if you're using a Python install that's managed by your operating system or another package manager.
Before installing python 3.6 you need to install the libraries needed.
sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
Do you have these installed on the PI?
More details here
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