Unable to install using pip3 for python3 development

[bladernr]

I need to write in python3 and noticed there was a small update for python3 related requirements recently, but when I tried to install using pip3, this failed with the following trace:

bladernr@bionic-dev:~$ pip3 --no-cache-dir install pycpuid
Collecting pycpuid
Downloading https://files.pythonhosted.org/packages/33/39/119c45433d62dcd60cb618bdeaac1064bb983c30b458a62abef7c679dc3d/PyCPUID-0.4.zip (70kB)
100% |████████████████████████████████| 71kB 1.0MB/s
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "", line 1, in
File "/tmp/pip-build-_sbotbgk/pycpuid/setup.py", line 20, in
requirements = RequirementsParser()
File "/tmp/pip-build-_sbotbgk/pycpuid/requirements.py", line 338, in init
self.data[source] = _read_requirements_file(f)
File "/tmp/pip-build-_sbotbgk/pycpuid/requirements.py", line 237, in _read_requirements_file
components = _split_package(line)
File "/tmp/pip-build-_sbotbgk/pycpuid/requirements.py", line 148, in _split_package
if components[-1]:
TypeError: 'map' object is not subscriptable

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-_sbotbgk/pycpuid/