Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #79891 > unrolled thread

%%(%s)s mean in python

Back to article view | Back to comp.lang.python

Contents

  %%(%s)s mean in python satishmlmlml@gmail.com - 2014-10-28 23:02 -0700
    Re: %%(%s)s mean in python satishmlmlml@gmail.com - 2014-10-28 23:12 -0700
    Re: %%(%s)s mean in python Ned Batchelder <ned@nedbatchelder.com> - 2014-10-29 07:38 -0400
    Re: %%(%s)s mean in python Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2014-10-29 16:12 +0100

#79891 — %%(%s)s mean in python

def fetchRecord(db, form): 
 try: 
  key = form['key'].value 
  record = db[key] 
  fields = record.__dict__ 
  fields['key'] = key 
 except: 
  fields = dict.fromkeys(fieldnames, '?') 
  fields['key'] = 'Missing or invalid key!' 
 return fields 
def updateRecord(db, form): 
 if not 'key' in form: 
  fields = dict.fromkeys(fieldnames, '?') 
  fields['key'] = 'Missing key input!' 
 else: 
  key = form['key'].value 
  if key in db: 
   record = db[key] 
 else: 
   from person import Person 
   record = Person(name='?', age='?') 
 for field in fieldnames: 
   setattr(record, field, eval(form[field].value)) 
  db[key] = record 
  fields = record.__dict__ 
  fields['key'] = key 
 return fields 
db  =  shelve.open(shelvename) 
action = form['action'].value if 'action' in form else None 
if action == 'Fetch': 
 fields = fetchRecord(db, form) 
elif action == 'Update': 
 fields = updateRecord(db, form) 
else: 
 fields = dict.fromkeys(fieldnames, '?') 
 fields['key'] = 'Missing or invalid action!' 
db.close() 
print(replyhtml % htmlize(fields)) 

What does %%(%s)s mean in Python?

[toc] | [next] | [standalone]

#79894

also
what does
rowshtml += (rowhtml % ((fieldname,) * 3)) expand to?

[toc] | [prev] | [next] | [standalone]

#79906

On 10/29/14 2:02 AM, satishmlmlml@gmail.com wrote:
> def fetchRecord(db, form):
>   try:

... 34 lines deleted ...

> db.close()
> print(replyhtml % htmlize(fields))

Why did you paste all this code, it doesn't have the thing you are 
asking about.

>
> What does %%(%s)s mean in Python?
>

It depends entirely on context. You'll need to find a *small* example of 
what you are asking about so we can help.

-- 
Ned Batchelder, http://nedbatchelder.com

[toc] | [prev] | [next] | [standalone]

#79916

Am 29.10.2014 07:02 schrieb satishmlmlml@gmail.com:

> What does %%(%s)s mean in Python?

Weird question, as this has nothing to do with the code you just posted.

In general, what comes up to my mind, is that it is a format string to 
build another format string.

Example:

metafmt = '%%(%s)s'
fieldname = 'myfield'
fmt = metafmt % fieldname
# Now we have a fmt as if it was assigned with '%(myfield)s':
# %% -> %, %s -> myfield.

d = {fieldname: 'my content'}

print fmt % d
# this now prints the given field - which is noted in fieldname -
# from the given dict d.

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web