example_usage.py; module 'seal_wrapper' has no attribute 'BigUInt'

[DreamingRaven]

Simple directory problem causing python to look there instead;
example_usage.py is looking in the local directory called "pyheal" in search of BigUInt which does not exist following standard installation instructions. However when moved into ./tests it works fine because it no longer prioritizes that local folder. Not sure there is a particularly fun solution for this other than either renaming the folder (probably not), or moving it into a different directory called examples.

1b8a5fb65e61:/pyheal# python3 example_usage.py 
Traceback (most recent call last):
  File "example_usage.py", line 1, in <module>
    from pyheal import wrapper
  File "/pyheal/pyheal/__init__.py", line 1, in <module>
    import pyheal.ciphertext_op
  File "/pyheal/pyheal/ciphertext_op.py", line 5, in <module>
    from pyheal import wrapper
  File "/pyheal/pyheal/wrapper.py", line 14, in <module>
    class BigUInt(seal.BigUInt):
AttributeError: module 'seal_wrapper' has no attribute 'BigUInt'

To reproduce here is a quick dockerfile (may also put in a pull request for docker stuff for convenience):
Dockerfile:

FROM ubuntu:19.10

# Install binary dependencies
RUN apt-get update && \
    apt-get install -qqy \
    g++ \
    git \
    make \
    cmake \
    python3 \
    python3-dev \
    python3-pip \
    python3-setuptools \
    python3-wheel \
    sudo \
    libdpkg-perl \
    --no-install-recommends


RUN git --version && \
    git clone --recurse-submodules https://github.com/Accenture/pyheal.git && \
    cd /pyheal && \
    pip3 install .

then run, sudo docker build -t archer/pyheal . -f Dockerfile && sudo docker run -it archer/pyheal python3 /pyheal/example_usage.py