Dawid Kuroczko wrote:
> So I thought, "lets learn a bit of Python", and I stumbled upon
> a choice of these two libraries. Whch would you suggest?
> How do they differ?
>
Well, pygresql seems unmaintained since mid 2006 and the psycopg2 site
is currently and regularly down. Neither inspires confidence.
As to differences, here's one:
Using pygresql
...
result=db.query('select false as booltest')
boolean_result = result.dictresult()[0]['booltest']
print boolean_result
if boolean_result:
print "The result was true"
else:
print "The result was false"
This prints:
f
The result was true
Huh? Seems that pygresql treats boolean as character 't' or 'f', python
evaluates both as 'true' and hilarity ensues. (Yes, I just spent some
"quality time" tracking a bug in a script that used pygresql and had a
loop with a test of a boolean column.)
Using psycopg2:
...
cur.execute('select false as booltest')
boolean_result = cur.fetchall()[0][0]
print boolean_result
if boolean_result:
print "The result was true"
else:
print "The result was false"
This prints:
False
The result was false
There was a brief discussion at the PG users group last week and the
bias was toward psycopg2.
Cheers,
Steve
