“ERROR:root:code for hash md5 was not found” when using any hg mercurial commands

Question

When trying to use any hg Mercurial commands on the console, I keep getting this error. I installed Python using Homebrew and I am running Mac OS Catalina v. 1

Answer 1

Just uninstall python2

$ brew uninstall python@2

If there is any error :

$ brew uninstall --ignore-dependencies python@2

Answer 2

The case for me is that when I install dependencies of a django web app, it messes up the environment. When I type cd, it shows the same error.

The problem was the openssl library, it can not find the correct ones.

If you are on Macintosh, you can type

ls /usr/local/Cellar/openssl

to see all the versions,

brew switch openssl 1.0.XXXX

to choose the available openssl version.

Then the error is gone :)

Answer 3

Running brew reinstall python@2 didn't work for my existing Python 2.7 virtual environments. Inside them there were still ERROR:root:code for hash sha1 was not found errors.

I encountered this problem after I ran brew upgrade openssl. And here's the fix:

$ ls /usr/local/Cellar/openssl

...which shows

1.0.2t

According to the existing version, run:

$ brew switch openssl 1.0.2t

...which shows

Cleaning /usr/local/Cellar/openssl/1.0.2t
Opt link created for /usr/local/Cellar/openssl/1.0.2t

After that, run the following command in a Python 2.7 virtualenv:

(my-venv) $ python -c "import hashlib;m=hashlib.md5();print(m.hexdigest())"

...which shows

d41d8cd98f00b204e9800998ecf8427e

No more errors.

Answer 4

The next solution worked for me on MacOS Catalina:

1. Unlink openssl

brew unlink openssl

2. Reinstall python 2.7 (removed from homebrew and can't be installed via brew install python@2)

brew tap-new <user>/homebrew-python2
brew extract python@2 <user>/homebrew-python2
brew reinstall /usr/local/Homebrew/Library/Taps/<user>/homebrew-python2/Formula/python@2.7.17.rbl

Answer 5

After installing openssl I got the same problem. This answer didn't help me, but after manual linking of libcrypto.1.1.dylib and libssl.1.1.dylib everything start working. In my case it was:

ln -s /usr/local/opt/openssl/lib/libcrypto.1.1.dylib /usr/local/lib
ln -s /usr/local/opt/openssl/lib/libssl.1.1.dylib /usr/local/lib

Answer 6

My problem was multiple versions of python installed (python was still aliased to python2 but i wanted pip to use python3). i also have a python3 bin installed on my system

# use pip with python3
$ python3 -m pip install fish

see Dealing with multiple Python versions and PIP? for details