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Groups > comp.lang.python > #6238 > unrolled thread
| Started by | Chris Guidry <chris@theguidrys.us> |
|---|---|
| First post | 2011-05-25 06:13 -0700 |
| Last post | 2011-05-25 09:21 -0400 |
| Articles | 2 — 2 participants |
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Re: Newbie string questions Chris Guidry <chris@theguidrys.us> - 2011-05-25 06:13 -0700
Re: Newbie string questions Matty Sarro <msarro@gmail.com> - 2011-05-25 09:21 -0400
| From | Chris Guidry <chris@theguidrys.us> |
|---|---|
| Date | 2011-05-25 06:13 -0700 |
| Subject | Re: Newbie string questions |
| Message-ID | <997e06dd-55dc-4b45-9ff2-97f24dd49908@glegroupsg2000goo.googlegroups.com> |
On Wednesday, May 25, 2011 9:06:02 AM UTC-4, Matty Sarro wrote: > can't seem to find some of the items in the documentation. Right now > what is stumping me... what exactly does %r do? I can't find it in the > documentation anywhere. Matty, %r in a format string is very much like %s. %s calls str(your_object) in order to produce the resulting string. %r calls repr(your_object). Generally, you'd want to use %s for strings that will surface to a user, while %r is great for debugging and logging. Also, if you haven't come across repr(), you should be able to find that in the docs; it's also considered good practice to overload repr() in your own classes in order to provide a useful representation for your objects.
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| From | Matty Sarro <msarro@gmail.com> |
|---|---|
| Date | 2011-05-25 09:21 -0400 |
| Message-ID | <mailman.2074.1306329690.9059.python-list@python.org> |
| In reply to | #6238 |
Thanks guys! I appreciate it. I was wondering why %r was always showing things enclosed in single-quotes. On Wed, May 25, 2011 at 9:13 AM, Chris Guidry <chris@theguidrys.us> wrote: > On Wednesday, May 25, 2011 9:06:02 AM UTC-4, Matty Sarro wrote: >> can't seem to find some of the items in the documentation. Right now >> what is stumping me... what exactly does %r do? I can't find it in the >> documentation anywhere. > > Matty, %r in a format string is very much like %s. %s calls str(your_object) in order to produce the resulting string. %r calls repr(your_object). Generally, you'd want to use %s for strings that will surface to a user, while %r is great for debugging and logging. > > Also, if you haven't come across repr(), you should be able to find that in the docs; it's also considered good practice to overload repr() in your own classes in order to provide a useful representation for your objects. > -- > http://mail.python.org/mailman/listinfo/python-list >
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