1. Python 3.3
ふるかわとおる

2. おまえ誰よ
• @torufurukawa
• 古川亨
• 株式会社バスキュール号

3. リリースが近づいてまいりました
3.3.0 alpha 1: March 3, 2012
3.3.0 alpha 2: March 31, 2012
3.3.0 alpha 3: April 28, 2012
3.3.0 alpha 4: May 26, 2012
3.3.0 beta 1: June 23, 2012
(No new features beyond this point.)
3.3.0 beta 2: July 14, 2012
3.3.0 candidate 1: July 28, 2012
3.3.0 candidate 2: August 11, 2012
3.3.0 final: August 18, 2012

4. リリースが近づいてまいりました
3.3.0 alpha 1: March 3, 2012
3.3.0 alpha 2: March 31, 2012
3.3.0 alpha 3: April 28, 2012
3.3.0 alpha 4: May 26, 2012
3.3.0 beta 1: June 23, 2012
(No new features beyond this point.)
3.3.0 beta 2: July 14, 2012
3.3.0 candidate 1: July 28, 2012
3.3.0 candidate 2: August 11, 2012
3.3.0 final: August 18, 2012

5. リリースが近づいてまいりました
3.3.0 alpha 1: March 3, 2012
3.3.0 alpha 2: March 31, 2012
3.3.0 alpha 3: April 28, 2012
3.3.0 alpha 4: May 26, 2012
3.3.0 beta 1: June 23, 2012
(No new features beyond this point.)
3.3.0 beta 2: July 14, 2012
3.3.0 candidate 1: July 28, 2012
3.3.0 candidate 2: August 11, 2012
3.3.0 final: August 18, 2012

7. チラ見

8. 【u】文字列【またぁ？】

9. u

10. u
Python 3.2

11. u
Python 3.2
>>> 'ほげ'

12. u
Python 3.2
>>> 'ほげ'
'ほげ'

13. u
Python 3.2
>>> 'ほげ'
'ほげ'
>>> u'ほげ'

14. u
Python 3.2
>>> 'ほげ'
'ほげ'
>>> u'ほげ'
File "<stdin>", line 1

15. u
Python 3.2
>>> 'ほげ'
'ほげ'
>>> u'ほげ'
File "<stdin>", line 1
u'ほげ'

16. u
Python 3.2
>>> 'ほげ'
'ほげ'
>>> u'ほげ'
File "<stdin>", line 1
u'ほげ'
^

17. u
Python 3.2
>>> 'ほげ'
'ほげ'
>>> u'ほげ'
File "<stdin>", line 1
u'ほげ'
^
SyntaxError: invalid syntax

18. u
Python 3.2 Python 3.3
>>> 'ほげ'
'ほげ'
>>> u'ほげ'
File "<stdin>", line 1
u'ほげ'
^
SyntaxError: invalid syntax

19. u
Python 3.2 Python 3.3
>>> 'ほげ' >>> 'ほげ'
'ほげ'
>>> u'ほげ'
File "<stdin>", line 1
u'ほげ'
^
SyntaxError: invalid syntax

20. u
Python 3.2 Python 3.3
>>> 'ほげ' >>> 'ほげ'
'ほげ' 'ほげ'
>>> u'ほげ'
File "<stdin>", line 1
u'ほげ'
^
SyntaxError: invalid syntax

21. u
Python 3.2 Python 3.3
>>> 'ほげ' >>> 'ほげ'
'ほげ' 'ほげ'
>>> u'ほげ' >>> u'ほげ'
File "<stdin>", line 1
u'ほげ'
^
SyntaxError: invalid syntax

22. u
Python 3.2 Python 3.3
>>> 'ほげ' >>> 'ほげ'
'ほげ' 'ほげ'
>>> u'ほげ' >>> u'ほげ'
File "<stdin>", line 1 'ほげ'
u'ほげ'
^
SyntaxError: invalid syntax

23. u
Python 3.2 Python 3.3
>>> 'ほげ' >>> 'ほげ'
'ほげ' 'ほげ'
>>> u'ほげ' >>> u'ほげ'
File "<stdin>", line 1 'ほげ'
u'ほげ' >>> 'ほげ' == u'ほげ'
^
SyntaxError: invalid syntax

24. u
Python 3.2 Python 3.3
>>> 'ほげ' >>> 'ほげ'
'ほげ' 'ほげ'
>>> u'ほげ' >>> u'ほげ'
File "<stdin>", line 1 'ほげ'
u'ほげ' >>> 'ほげ' == u'ほげ'
^ True
SyntaxError: invalid syntax

25. non-BMP Unicode 文字

26. non-BMP Unicode 文字
Python 3.2
>>> 'U0001F344'
>>> len(x)
2
>>> x[0], x[1]
('ud83c', 'udf4c')

27. non-BMP Unicode 文字
Python 3.2 Python 3.3
>>> 'U0001F344' >>> x = 'U0001F344'
>>> len(x) >>> len(x)
2 1
>>> x[0], x[1] >>> x[0]
('ud83c', 'udf4c') 'ud83c'

28. 【yield】サブジェネレータ【next】

30. >>> def g():

31. >>> def g():
... yield 'START'

32. >>> def g():
... yield 'START'
... for i in range(5):

33. >>> def g():
... yield 'START'
... for i in range(5):
... yield i

34. >>> def g():
... yield 'START'
... for i in range(5):
... yield i
... yield 'END'

35. >>> def g():
... yield 'START'
... for i in range(5):
... yield i
... yield 'END'
...

36. >>> def g():
... yield 'START'
... for i in range(5):
... yield i
... yield 'END'
...
>>> list(g())

37. >>> def g():
... yield 'START'
... for i in range(5):
... yield i
... yield 'END'
...
>>> list(g())
['START', 0, 1, 2, 3, 4, 'END']

38. サブジェネレータ

39. サブジェネレータ
>>> def g():

40. サブジェネレータ
>>> def g():
... yield 'START'

41. サブジェネレータ
>>> def g():
... yield 'START'
... yield from range(5)

42. サブジェネレータ
>>> def g():
... yield 'START'
... yield from range(5)
... yield 'END'

43. サブジェネレータ
>>> def g():
... yield 'START'
... yield from range(5)
... yield 'END'
...

44. サブジェネレータ
>>> def g():
... yield 'START'
... yield from range(5)
... yield 'END'
...
>>> list(g())

45. サブジェネレータ
>>> def g():
... yield 'START'
... yield from range(5)
... yield 'END'
...
>>> list(g())
['START', 0, 1, 2, 3, 4, 'END']

46. 細々ときれいになる

47. IOError のヒエラルキーがひどい
+-- EnvironmentError
+-- IOError
+-- io.BlockingIOError
+-- io.UnsupportedOperation
+-- socket.error
+-- socket.gaierror
+-- socket.herror
+-- socket.timeout
+-- OSError
+-- VMSError
+-- WindowsError
+-- mmap.error
+-- select.error

48. シンプルに
+-- OSError (replacing IOError, WindowsError,
EnvironmentError, etc.)
+-- io.BlockingIOError
+-- io.UnsupportedOperation
+-- socket.gaierror
+-- socket.herror
+-- socket.timeout

49. distutils から packaging へ

50. さよなら
OS/2, VMS, Windows 2000

51. 以上、チラ見せでした

52. まだ控えている PEP があります
PEP 362: Function Signature Object
PEP 395: Module Aliasing
PEP 397: Python launcher for Windows
PEP 402: Simplified Package Layout (likely a new PEP derived from it)
PEP 405: Python Virtual Environments
PEP 412: Key-Sharing Dictionary
PEP 3143: Standard daemon process library
PEP 3144: IP Address manipulation library
Other planned large-scale changes:
Addition of the "mock" library
Addition of the C decimal implementation
Addition of the "regex" module
Email version 6
Implementing __import__ using importlib
A standard event-loop interface (PEP by Jim Fulton pending)
Breaking out standard library and docs in separate repos?

53. PEP 3143: Standard
daemon process library
import daemon
from spam import do_main_program
with daemon.DaemonContext():
do_main_program()

54. PEP 405: Python
Virtual Environments
python3 -m venv /wozozo

55. Python 3.3 をよろしく