Python loops with rpy and psycopg2

Question

Good day,

I've been struggling some time now and cannot find an answer on Google. Im using Python with rpy (not rpy2) and psycopg2 for PostgreSQL. When trying a loop for SQL I would do the following:

for i in xrange(1:11):
    script = "DELETE FROM table WHERE column = %d" % i
    cur.execute(script)

This works fine, but how can I do something similar with rpy? For example the following:

for i in xrange(1:11):
    test = "15 * %d" % i
    r('test')                # This does not work
    r.assign('test', test')
    r('print(test)')         # This does not work either
    x = r('test')
    print x                  # This prints 15 * 1, then 15 * 2, but not 15 and 30.

Sorry if this is too simple, but I'm stuck!

Answer 1

I managed to figure it out!

Simply:

r('test <- 15 * %d' % i)

This never worked before as I did this:

r('test <- 15 * %d') % i

Not sure why this makes a difference, but this seems to work!