Oops
I've got my own wee dictionary reader, writers. Very simple -
So, you have a user Dave, who has a dictionary of {'address':'21 jump
St', 'Number: 'One, the loneliest.'}
So, you create a dictionary of dictionaries -myDict = {'Dave' :
{'address':'21 jump St', 'Number: 'One, the loneliest.'}
And then you have -
def writeDict(file, diction):
inp=file(file, 'w')
for (key, item) in diction.items():
inp.write(key+'\n')
inp.write(item+'\n')
inp.close()
return 1
Courtesy of Danny Yoo, the very helpful pair generating function below
(it's indispensable this one, I use it so often)
def groupAdjacentElements(someSequence, n = 2):
"""A little helper utility to group up adjacent elements."""
nextGroup = []
for element in someSequence:
nextGroup.append(element)
if len(nextGroup) == n:
yield tuple(nextGroup)
nextGroup = []
Goes with -
def loadDict(filename):
store2 = file(filename,'r')
for (name, entry) in groupAdjacentElements(store2):
name = name.strip()
entry = entry.strip()
book[name] = entry
store2.close()
return book
So - to save myDict to saveddic.dct -
writeDict('saveddic.dct', myDict)
and to open it -
myDictCopy=loadDict('saveddic.dct')
And it saves in the format -
dave
{'address':'21 Jump St', 'number':'One, the loneliest'}
key
value
key
value
Nice and plaintext.
HTH
On Sun, 5 Dec 2004 16:31:59 -0500, Jacob S. <[EMAIL PROTECTED]> wrote:
> I did something like this about three or four months ago...
> This is what I did. Notice the use of the built-in str() and eval()
> functions to write and receive data to and from Telephone.cfg...
>
> from __future__ import division
> tel = {}
> try:
> file = open('Telephone.cfg', 'r')
> except:
> file = open('Telephone.cfg','w')
> file.close()
> file = open('Telephone.cfg','r')
> try:
> tel = eval(file.read())
> a = 0
> except:
> a = 1
> print "No entries on file."
> pass
> print """\
> Commands are:
> add
> get
> save
> delete
> quit
> all is a wildcard
> """
>
> while 1:
> ask = raw_input('Tell me what you wish to do. ')
> if ask == "quit":
> break
> ask = ask.split(" ")
> command = ask[0]
> entity = ask[1:]
> entity = " ".join(entity)
> if entity == '':
> entity = raw_input("Who do you want to %s? " % command)
> if command == 'add':
> person = entity
> if tel.has_key(person):
> print "That person is already in there. If you wish to edit the
> file, please delete the record first."
> else:
> tel[person] = raw_input("What is their phone number? ")
> if command == 'get':
> if a == 1:
> print "Sorry, there are no entries available."
> else:
> person = entity
> if person == 'all':
> key = tel.keys()
> key.sort()
> print
> for x in key:
> print "%s\n%s\n" % (x,tel[x])
> elif tel.has_key(person):
> print "\n%s\n%s\n" % (person,tel[person])
> else:
> print "%s is not in your records." % person
> if command == 'save':
> file=open('Telephone.cfg', 'w')
> file.write(str(tel))
> file.close()
> print 'Saved in Telephone.cfg'
> if command == 'delete':
> if a == 1:
> print "Sorry, there are no entries available."
> else:
> person = entity
> if person == 'all':
> tel={}
> newfile=open('Telephone.cfg', 'w')
> newfile.close()
> else:
> if tel.has_key(person):
> del tel[person]
> else:
> print "%s is not in your records." % person
> file.close()
> file = open('Telephone.cfg', 'w')
> file.write(str(tel))
> file.close()
>
> As always, feel free to modify, use, and otherwise tear apart my code and
> give me suggests on how to improve it.
> Jacob Schmidt
>
>
>
> > Dear Tutor,
> >
> > I like to know what is the proper procedure (is algorithmn the right
> > term?) in creating data in a program, write it to file, close the app
> > then retrieve the data when run again. Basically, I'm trying to simulate
> > a simple address book (well not really for the datas are just names for
> > now) and so far have created the basic menu interface. It is console
> > base so forget gui. I ask user input and store it in a list. There are
> > menus to change, delete the data, and to save the data list in file. I
> > use cPickle for this and have verified the file is created by checking
> > in my $PWD. I want to retrieve that data when program is run again. What
> > to add in my code? I thought not to post the code but explain it as
> > above.
> >
> > What i want: when program is run again, the saved data is loaded when user
> > selects option 1 below. Of course the first time it is run, the list is
> > empty.
> >
> > def print_options():
> > print '''
> > Options:
> > [1] - Print content of list
> > [2] - Add name to list
> > [3] - Delete name from list
> > [4] - Change name in list
> > [5] - Save list to file
> > [P] - Print this menu
> > [Q] - Quit
> > '''
> >
> >
> >
> > --
> > Regards,
> > Eri Mendz
> > Using PC-Pine 4.61
> >
> >
> > --
> > Using PC-Pine 4.61
> >
> > _______________________________________________
> > Tutor maillist - [EMAIL PROTECTED]
> > http://mail.python.org/mailman/listinfo/tutor
> >
> >
>
> _______________________________________________
> Tutor maillist - [EMAIL PROTECTED]
> http://mail.python.org/mailman/listinfo/tutor
>
--
'There is only one basic human right, and that is to do as you damn well please.
And with it comes the only basic human duty, to take the consequences.
--
'There is only one basic human right, and that is to do as you damn well please.
And with it comes the only basic human duty, to take the consequences.
_______________________________________________
Tutor maillist - [EMAIL PROTECTED]
http://mail.python.org/mailman/listinfo/tutor
