(2021-02-07) Migrating to Python3

When I hit various error messages that make no sense (see Feb07 (2020-10-12) Building user management in WikiFlux), I start to suspect the underlying mess is from still being on Python-2. So going to finally bite the bullet.

Starting on laptop from (2020-10-02) Setting Up Python On New MacBookPro....

• in which I did pyenv install 3.8.5

Feb07'2021 setting up python3 (parallel to Oct03 notes above)

• mkdir py3
• pyenv local 3.8.5
• pip install virtualenv
• mkdir flask, cd flask, virtualenv venv
• source venv/bin/activate
• pip install Flask
• cp -R py2/flask/wikiweb py3/flask/
• cd wikiweb
• pip install python-dotenv
• flask run → runs!
• hit page → No module named 'flask_sqlalchemy'
• pip install -U Flask-SQLAlchemy
• flask run → No module named 'flask_user'
• pip install Flask-User, flask run → Install 'email_validator' for email validation support.
• pip install email_validator, flask run → No module named 'forms'
• [change](ModuleNotFoundError: No module named 'forms') from forms to from .forms → error from using print without parens (python 3 change)
• discover 2to3, do 2to3 -w routes.py it adds a 2nd set of parens to all the print statements I just fixed myself. So back-fixed those.
• flask run → ModuleNotFoundError: No module named 'werkzeug.contrib' - Werkzeug 1.0.0 has removed deprecated code from 'werkzeug.contrib'. You can downgrade to Werkzeug 0.16.0 to work around this issue. (that version was released 2019-09-19)
• pip install feedgen, adjust code per docs
• pip install stripe
• run 2to3 against rest of files
• pip install psycopg2
• flask run - have to change URL from http://127.0.0.1:5000/ to http://flux.garden:5000/
• hit page → No module named 'commonmark'
• install → No module named 'pyparsing'
• install → get home page!

Feb13

• hit specific garden-page: nope, have to change string.count('str',x) to str.count('x')
  • ugh lots of string function tweaks in routes.py
• most things working now
• check atom feed... some tweaks, I hadn't done it right
• ugh feed issue with my datetime fields: Datetime object has no timezone info
• pip install pytz
• plus other feed tweaks. Now working, incl checking w3 validator
• next: check private/inner feed, think has wrong url. Fixed it, then realized I didn't want to have a feed available for a private space. Duh.
• the Stripe stuff worked with mod.

(Feb27: I was afraid my local stuff got broken from (2021-02-18) Starting some LiveCoding but it seems ok.)

(Later Feb27: did a simple update of my linode and nothing was working. I figured out I was running flask 1.1 and chunks of my old code wouldn't work. How did that happen? After much mucking about I realized that some of what I did above I must have been doing in my server window instead of a local window, because there's a pip.log file. What a mess.

Next

• figure out how to do the server! I guess I'll have to upgrade the python stuff and move to this new app structure all at the same time. Not ideal...
• update: looks like before I do that I need to update my server from Ubuntu 11! Which is so old they suggest spinning up a new Linode, getting it running, copying over data, and then swapping IPs. Should I get that new node running my new system from the get-go? Seems kinda logical....
• (2021-03-01) Massive Server Upgrade attempts with Linode, then switch to
• (2021-04-25) Move To DigitalOcean