Data Types
**********

The modules described in this chapter provide a variety of specialized
data types such as dates and times, fixed-type arrays, heap queues,
double-ended queues, and enumerations.

Python also provides some built-in data types, in particular, "list",
"tuple", "dict", "frozendict", "set",  and "frozenset". The "str"
class is used to hold Unicode strings, and the "bytes" and "bytearray"
classes are used to hold binary data.

The following modules are documented in this chapter:

* "datetime" --- Βασικοί τύποι ημερομηνίας και ώρας

  * Aware and naive objects

  * Σταθερές

  * Available types

    * Common properties

    * Determining if an object is aware or naive

  * "timedelta" objects

    * Examples of usage: "timedelta"

  * "date" objects

    * Examples of usage: "date"

  * "datetime" objects

    * Examples of usage: "datetime"

  * "time" objects

    * Examples of usage: "time"

  * "tzinfo" objects

  * "timezone" objects

  * "strftime()" and "strptime()" behavior

    * "strftime()" and "strptime()" format codes

    * Technical detail

* "zoneinfo" --- Υποστήριξη ζωνών ώρας IANA

  * Χρήση του "ZoneInfo"

  * Πηγές δεδομένων

    * Διαμόρφωση των πηγών δεδομένων

      * Διαμόρφωση κατά το compile-time

      * Διαμόρφωση περιβάλλοντος

      * Διαμόρφωση κατά το runtime

  * Η κλάση "ZoneInfo"

    * Αναπαραστάσεις συμβολοσειρών

    * Σειριοποίηση με pickle

  * Συναρτήσεις

  * Καθολικές μεταβλητές

  * Εξαιρέσεις και προειδοποιήσεις

* "calendar" --- General calendar-related functions

  * Command-line usage

* "collections" --- Container datatypes

  * "ChainMap" objects

    * "ChainMap" Examples and Recipes

  * "Counter" objects

  * "deque" objects

    * "deque" Recipes

  * "defaultdict" objects

    * "defaultdict" Examples

  * "namedtuple()" Factory Function for Tuples with Named Fields

  * "OrderedDict" objects

    * "OrderedDict" Examples and Recipes

  * "UserDict" objects

  * "UserList" objects

  * "UserString" objects

* "collections.abc" --- Αφηρημένες Βασικές Κλάσεις για Containers

  * Αφηρημένες Βασικές Κλάσεις Συλλογών

  * Αφηρημένες Βασικές Κλάσεις Συλλογών -- Αναλυτικές Περιγραφές

  * Παραδείγματα και Συνταγές

* "heapq" --- Heap queue algorithm

  * Basic Examples

  * Other Applications

  * Priority Queue Implementation Notes

  * Theory

* "bisect" --- Array bisection algorithm

  * Performance Notes

  * Searching Sorted Lists

  * Examples

* "array" --- Efficient arrays of numeric values

* "weakref" --- Weak references

  * Weak Reference Objects

  * Example

  * Finalizer Objects

  * Comparing finalizers with "__del__()" methods

* "types" --- Δημιουργία δυναμικών τύπων και ονόματα για
  ενσωματωμένους τύπους

  * Δημιουργία Δυναμικών Τύπων

  * Τυπικοί Τύποι Διερμηνέα

  * Πρόσθετες βοηθητικές κλάσεις και συναρτήσεις

  * Βοηθητικές Συναρτήσεις Coroutine

* "copy" --- Shallow and deep copy operations

* "pprint" --- Data pretty printer

  * Functions

  * PrettyPrinter Objects

  * Example

* "reprlib" --- Alternate "repr()" implementation

  * Repr Objects

  * Subclassing Repr Objects

* "enum" --- Support for enumerations

  * Module contents

  * Data types

    * Supported "__dunder__" names

    * Supported "_sunder_" names

  * Utilities and decorators

  * Notes

* "graphlib" --- Functionality to operate with graph-like structures

  * Exceptions
