[Baypiggies] Discussion for newbies/beginner night talks
zia at cruzio.com
Sat Feb 10 09:27:04 CET 2007
For what it's worth, here's my version. It was inspired by Hal
Fulton's "margin" method from his Ruby book. It works at runtime, and
isn't as strict as the cookbook example that Michael Bernstein
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/145672 ), but
it's short and a bit easier to use (less cluttered-looking at usage
site) than Chad's more efficient compile-time version.
undent_pat = re.compile( r"(?m)^\s*\S(.*)$", re.M )
def undent (str):
return undent_pat.sub( r'\1', str.rstrip() )
sql = undent( '''\
|select customers.name as name,
| sum(invoices.amount) as amount_total,
| blah as blah
| from customers
Maybe I ought to add it to that cookbook entry.
-- Doug L.
On Feb 9, 2007, at 5:43 PM, Chad Netzer wrote:
> n 2/9/07, Dennis Reinhardt <DennisR at dair.com> wrote:
>> To preserve SQL *and* Python structuring, I would write this as:
>> class MyBizobj(...):
>> def getCustomerInfo(self, cust_id):
>> sql = ""
>> sql += "select customers.name as name,\r\n"
>> sql += " sum(invoices.amount) as amount_total,\r\n"
>> sql += " blah as blah\r\n"
>> sql += " from customers\r\n"
>> sql += " left join invoices\r\n"
>> sql += " on invoices.cust_id = customers.id\r\n"
>> sql += " where customers.id = ?\r\n"
>> self.cur.execute(sql, (cust_id,))
> Another alternative (which does the concatenation at compile time) is:
> class MyBizobj(...):
> def getCustomerInfo(self, cust_id):
> sql = (
> "select customers.name as name,\r\n"
> " sum(invoices.amount) as amount_total,\r\n"
> " blah as blah\r\n"
> " from customers\r\n"
> " etc..."
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