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# A wrapper around the (optional) built-in class dbm, supporting keys
# and values of almost any type instead of just string.
# (Actually, this works only for keys and values that can be read back
# correctly after being converted to a string.)


class Dbm:

    def __init__(self, filename, mode, perm):
        import dbm
        self.db = dbm.open(filename, mode, perm)

    def __repr__(self):
        s = ''
        for key in self.keys():
            t = repr(key) + ': ' + repr(self[key])
            if s: t = ', ' + t
            s = s + t
        return '{' + s + '}'

    def __len__(self):
        return len(self.db)

    def __getitem__(self, key):
        return eval(self.db[repr(key)])

    def __setitem__(self, key, value):
        self.db[repr(key)] = repr(value)

    def __delitem__(self, key):
        del self.db[repr(key)]

    def keys(self):
        res = []
        for key in self.db.keys():
            res.append(eval(key))
        return res

    def has_key(self, key):
        return self.db.has_key(repr(key))


def test():
    d = Dbm('@dbm', 'rw', 0600)
    print d
    while 1:
        try:
            key = input('key: ')
            if d.has_key(key):
                value = d[key]
                print 'currently:', value
            value = input('value: ')
            if value is None:
                del d[key]
            else:
                d[key] = value
        except KeyboardInterrupt:
            print ''
            print d
        except EOFError:
            print '[eof]'
            break
    print d


test()

Name	Type	Size	Permission
Complex.py	File	9.72 KB	0644
Complex.pyc	File	9.79 KB	0644
Complex.pyo	File	9.79 KB	0644
Dates.py	File	7.64 KB	0644
Dates.pyc	File	7.16 KB	0644
Dates.pyo	File	7.16 KB	0644
Dbm.py	File	1.54 KB	0644
Dbm.pyc	File	2.46 KB	0644
Dbm.pyo	File	2.46 KB	0644
README	File	522 B	0644
Range.py	File	3.05 KB	0644
Range.pyc	File	4 KB	0644
Range.pyo	File	4 KB	0644
Rev.py	File	2 KB	0644
Rev.pyc	File	2.8 KB	0644
Rev.pyo	File	2.8 KB	0644
Vec.py	File	1.33 KB	0644
Vec.pyc	File	2.75 KB	0644
Vec.pyo	File	2.75 KB	0644
bitvec.py	File	10.25 KB	0644
bitvec.pyc	File	10.05 KB	0644
bitvec.pyo	File	10.05 KB	0644

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