[Python-checkins] CVS: python/nondist/peps pep-0202.txt,1.3,1.4

[Guido van Rossum]

Update of /cvsroot/python/python/nondist/peps
In directory slayer.i.sourceforge.net:/tmp/cvs-serv17584

Modified Files:
	pep-0202.txt 
Log Message:
BDFL pronouncements.
Got rid of ^L.


Index: pep-0202.txt
===================================================================
RCS file: /cvsroot/python/python/nondist/peps/pep-0202.txt,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -r1.3 -r1.4
*** pep-0202.txt	2000/07/25 15:07:28	1.3
--- pep-0202.txt	2000/07/27 20:13:39	1.4
***************
*** 6,10 ****
  Status: Incomplete
  
! 
  Introduction
  
--- 6,10 ----
  Status: Incomplete
  
! 
  Introduction
  
***************
*** 12,17 ****
      comprehensions. 
  
  
- 
  The Proposed Solution
  
--- 12,17 ----
      comprehensions. 
  
+ 
  
  The Proposed Solution
  
***************
*** 20,25 ****
      statements nest now.
      
  
- 
  Rationale
  
--- 20,25 ----
      statements nest now.
      
+ 
  
  Rationale
  
***************
*** 28,32 ****
      be used.
  
! 
  Examples
  
--- 28,32 ----
      be used.
  
! 
  Examples
  
***************
*** 39,53 ****
      >>> nums = [1,2,3,4]
      >>> fruit = ["Apples", "Peaches", "Pears", "Bananas"]
!     >>> print [i,f for i in nums for f in fruit]
      [(1, 'Apples'), (1, 'Peaches'), (1, 'Pears'), (1, 'Bananas'),
       (2, 'Apples'), (2, 'Peaches'), (2, 'Pears'), (2, 'Bananas'),
       (3, 'Apples'), (3, 'Peaches'), (3, 'Pears'), (3, 'Bananas'),
       (4, 'Apples'), (4, 'Peaches'), (4, 'Pears'), (4, 'Bananas')]
!     >>> print [i,f for i in nums for f in fruit if f[0] == "P"]
      [(1, 'Peaches'), (1, 'Pears'),
       (2, 'Peaches'), (2, 'Pears'),
       (3, 'Peaches'), (3, 'Pears'),
       (4, 'Peaches'), (4, 'Pears')]
!     >>> print [i,f for i in nums for f in fruit if f[0] == "P" if i%2 == 1]
      [(1, 'Peaches'), (1, 'Pears'), (3, 'Peaches'), (3, 'Pears')]
      >>> def zip(*args):
--- 39,53 ----
      >>> nums = [1,2,3,4]
      >>> fruit = ["Apples", "Peaches", "Pears", "Bananas"]
!     >>> print [(i,f) for i in nums for f in fruit]
      [(1, 'Apples'), (1, 'Peaches'), (1, 'Pears'), (1, 'Bananas'),
       (2, 'Apples'), (2, 'Peaches'), (2, 'Pears'), (2, 'Bananas'),
       (3, 'Apples'), (3, 'Peaches'), (3, 'Pears'), (3, 'Bananas'),
       (4, 'Apples'), (4, 'Peaches'), (4, 'Pears'), (4, 'Bananas')]
!     >>> print [(i,f) for i in nums for f in fruit if f[0] == "P"]
      [(1, 'Peaches'), (1, 'Pears'),
       (2, 'Peaches'), (2, 'Pears'),
       (3, 'Peaches'), (3, 'Pears'),
       (4, 'Peaches'), (4, 'Pears')]
!     >>> print [(i,f) for i in nums for f in fruit if f[0] == "P" if i%2 == 1]
      [(1, 'Peaches'), (1, 'Pears'), (3, 'Peaches'), (3, 'Pears')]
      >>> def zip(*args):
***************
*** 56,61 ****
      >>> print [i for i in zip(nums,fruit) if i[0]%2==0]
      [(2, 'Peaches'), (4, 'Bananas')]
  
- 
  Reference Implementation
  
--- 56,61 ----
      >>> print [i for i in zip(nums,fruit) if i[0]%2==0]
      [(2, 'Peaches'), (4, 'Bananas')]
+ 
  
  Reference Implementation
  
***************
*** 66,71 ****
      for a patch that adds list comprehensions to Python.
  
  
! 
  Open Issues
  
--- 66,84 ----
      for a patch that adds list comprehensions to Python.
  
+ 
+ BDFL Pronouncements
  
!     Note: the BDFL refers to Guido van Rossum, Python's Benevolent
!     Dictator For Life.
! 
!     - The syntax proposed above is the Right One.
! 
!     - The form [x, y for ...] should be disallowed; one should be
!     required to write [(x, y) for ...].
! 
!     - The form [... for x... for y...] nests, with the last index
!     varying fastest, just like nested for loops.
! 
! 
  Open Issues
  
***************
*** 113,118 ****
          is.  It has not had a lot of exercise, though the patch does include
          a few test cases.
  
- 
  Local Variables:
  mode: indented-text
--- 126,131 ----
          is.  It has not had a lot of exercise, though the patch does include
          a few test cases.
+ 
  
  Local Variables:
  mode: indented-text