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Converting from Python 2 to 3

"You too can solder!"
“You too can solder!”

And here’s a clip I took a while back too: Crissy Field, SF CA

I found a hierarchical tagging Django app called django-categories that I wanted to use in a project. There were a couple of things that I wanted to fix so I forked it and for one reason or another started to build in Python 3 support.

I’ve heard about Python 3. I’ve even written some small programs in it. But library support wasn’t really there back when I tried it and I slunk back to the comfort of Python 2.7. It turns out that all the dependencies for django-categories work in Python 3 and I found a few tools that make version portable code a snap to write. Maybe 2014 is the year of py3k.

Continue reading “Converting from Python 2 to 3”
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Programming

python list comprehensions, with surprise!

Wasn’t expecting this behavior, but variables used in list comprehensions and with blocks continue to be in scope…

# variables introduced in list comprehensions continue to exist in scope
[a_var for a_var in range(10)]

print "Hey, what's a_var?", a_var

# similar thing happens when using "with"
with open("some_file.txt") as a_file:
    pass

print "Hey, what's a_file?", a_file

python test.py
Hey, what's a_var? 9
Hey, what's a_file? <closed file 'some_file.txt', mode 'r' at 0xb747cee8>
Categories
Programming

git patch mode

A friend at work sent these videos around. If you use git and have ever made more than one feature change in a file between commits, patch mode can help!

http://www.youtube.com/watch?v=Wl0NfWYrvlY

http://www.youtube.com/watch?v=1tqMjJeyKpw