diff options
Diffstat (limited to 'Lib/anydbm.py')
| -rw-r--r-- | Lib/anydbm.py | 80 |
1 files changed, 40 insertions, 40 deletions
diff --git a/Lib/anydbm.py b/Lib/anydbm.py index cb43a93..ba6fa7b 100644 --- a/Lib/anydbm.py +++ b/Lib/anydbm.py @@ -2,13 +2,13 @@ Instead of - import dbm - d = dbm.open(file, 'w', 0666) + import dbm + d = dbm.open(file, 'w', 0666) use - import anydbm - d = anydbm.open(file, 'w') + import anydbm + d = anydbm.open(file, 'w') The returned object is a dbhash, gdbm, dbm or dumbdbm object, dependent on the type of database being opened (determined by whichdb @@ -19,14 +19,14 @@ order). It has the following interface (key and data are strings): - d[key] = data # store data at key (may override data at - # existing key) - data = d[key] # retrieve data at key (raise KeyError if no - # such key) - del d[key] # delete data stored at key (raises KeyError - # if no such key) - flag = d.has_key(key) # true if the key exists - list = d.keys() # return a list of all existing keys (slow!) + d[key] = data # store data at key (may override data at + # existing key) + data = d[key] # retrieve data at key (raise KeyError if no + # such key) + del d[key] # delete data stored at key (raises KeyError + # if no such key) + flag = d.has_key(key) # true if the key exists + list = d.keys() # return a list of all existing keys (slow!) Future versions may change the order in which implementations are tested for existence, add interfaces to other dbm-like @@ -43,44 +43,44 @@ only if it doesn't exist; and 'n' always creates a new database. """ try: - class error(Exception): - pass + class error(Exception): + pass except: - error = "anydbm.error" + error = "anydbm.error" _names = ['dbhash', 'gdbm', 'dbm', 'dumbdbm'] _errors = [error] _defaultmod = None for _name in _names: - try: - _mod = __import__(_name) - except ImportError: - continue - if not _defaultmod: - _defaultmod = _mod - _errors.append(_mod.error) + try: + _mod = __import__(_name) + except ImportError: + continue + if not _defaultmod: + _defaultmod = _mod + _errors.append(_mod.error) if not _defaultmod: - raise ImportError, "no dbm clone found; tried %s" % _names + raise ImportError, "no dbm clone found; tried %s" % _names error = tuple(_errors) def open(file, flag = 'r', mode = 0666): - # guess the type of an existing database - from whichdb import whichdb - result=whichdb(file) - if result is None: - # db doesn't exist - if 'c' in flag or 'n' in flag: - # file doesn't exist and the new - # flag was used so use default type - mod = _defaultmod - else: - raise error, "need 'c' or 'n' flag to open new db" - elif result == "": - # db type cannot be determined - raise error, "db type could not be determined" - else: - mod = __import__(result) - return mod.open(file, flag, mode) + # guess the type of an existing database + from whichdb import whichdb + result=whichdb(file) + if result is None: + # db doesn't exist + if 'c' in flag or 'n' in flag: + # file doesn't exist and the new + # flag was used so use default type + mod = _defaultmod + else: + raise error, "need 'c' or 'n' flag to open new db" + elif result == "": + # db type cannot be determined + raise error, "db type could not be determined" + else: + mod = __import__(result) + return mod.open(file, flag, mode) |