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🐍 _gdbm Module

🏷️ NAME

_gdbm - This module provides an interface to the GNU DBM (GDBM) library.

🚀 Quick Reference

Use Case	Command	Description
Open for reading	open('db', 'r')	Open existing database read-only
Open for read/write	open('db', 'w')	Open existing database read-write
Open or create	open('db', 'c')	Open existing or create new database
Create new database	open('db', 'n')	Always create a new empty database
Fast mode (no sync)	open('db', 'cf')	Open with fast mode (faster writes, crash risk)
Sync mode	open('db', 'cs')	Open with synchronized writes
Disable locking	open('db', 'cu')	Open without file locking
Force sync	db.sync()	Force unwritten data to disk

📚 MODULE REFERENCE

https://docs.python.org/3.10/library/_gdbm.html

The following documentation is automatically generated from the Python source files. It may be incomplete, incorrect or include features that are considered implementation detail and may vary between Python implementations. When in doubt, consult the module reference at the location listed above.

📝 DESCRIPTION

This module is quite similar to the dbm module, but uses GDBM instead to provide some additional functionality. Please note that the file formats created by GDBM and dbm are incompatible.

GDBM objects behave like mappings (dictionaries), except that keys and values are always immutable bytes-like objects or strings. Printing a GDBM object doesn't print the keys and values, and the items() and values() methods are not supported.

🏛️ CLASSES

builtins.OSError(builtins.Exception) → error

🐛 class error

Method resolution order:

1. error
2. builtins.OSError
3. builtins.Exception
4. builtins.BaseException
5. builtins.object

Data descriptors defined here:

• __weakref__ — list of weak references to the object (if defined)

Methods inherited from builtins.OSError:

• __init__(self, /, *args, **kwargs) — Initialize self. See help(type(self)) for accurate signature.
• __reduce__(...) — Helper for pickle.
• __str__(self, /) — Return str(self).

Static methods inherited from builtins.OSError:

• __new__(*args, **kwargs) from builtins.type — Create and return a new object. See help(type) for accurate signature.

Data descriptors inherited from builtins.OSError:

• characters_written
• errno — POSIX exception code
• filename — exception filename
• filename2 — second exception filename
• strerror — exception strerror

Methods inherited from builtins.BaseException:

• __delattr__(self, name, /) — Implement delattr(self, name).
• __getattribute__(self, name, /) — Return getattr(self, name).
• __repr__(self, /) — Return repr(self).
• __setattr__(self, name, value, /) — Implement setattr(self, name, value).
• __setstate__(...)
• with_traceback(...) — Exception.with_traceback(tb) -- set self.__traceback__ to tb and return self.

Data descriptors inherited from builtins.BaseException:

• __cause__ — exception cause
• __context__ — exception context
• __dict__
• __suppress_context__
• __traceback__
• args

🔧 FUNCTIONS

📂 open

open(filename, flags='r', mode=438, /)

Open a dbm database and return a dbm object.

The filename argument is the name of the database file.

The optional flags argument can be:

• 'r' — open an existing database for reading only (default)
• 'w' — open an existing database for reading and writing
• 'c' — create the database if it doesn't exist
• 'n' — always create a new empty database

Some versions of gdbm support additional flags which must be appended to one of the flags described above. The module constant open_flags is a string of valid additional flags.

• 'f' — fast mode; altered data not automatically written to disk after every change. Faster writes, but risk of inconsistent database if crash. Use sync() to force unwritten data to disk.
• 's' — synchronized mode; all database operations synchronized to disk.
• 'u' — disable locking of the database file.

The optional mode argument is the Unix mode of the file, used only when the database has to be created. It defaults to octal 0o666.

📊 DATA

open_flags = 'rwcnfsu'

📁 FILE

/usr/lib/python3.10/lib-dynload/_gdbm.cpython-310-x86_64-linux-gnu.so

🐍 _gdbm Module 🏷️ NAME 🚀 Quick Reference 📚 MODULE REFERENCE 📝 DESCRIPTION 🏛️ CLASSES 🔧 FUNCTIONS 📊 DATA 📁 FILE