New tutorial tests in test_generators.py

[francisgirard]

BPO	1113421
Nosy	@birkenfeld, @birkenfeld, @rhettinger
Files	test_generators.py.310105.diff: Patch for test_generators.py

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/birkenfeld'
closed_at = <Date 2005-08-24.09:04:41.000>
created_at = <Date 2005-01-31.20:16:03.000>
labels = ['tests']
title = 'New tutorial tests in test_generators.py'
updated_at = <Date 2005-08-24.09:04:41.000>
user = 'https://bugs.python.org/francisgirard'

bugs.python.org fields:

activity = <Date 2005-08-24.09:04:41.000>
actor = 'georg.brandl'
assignee = 'georg.brandl'
closed = True
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2005-01-31.20:16:03.000>
creator = 'francisgirard'
dependencies = []
files = ['6466']
hgrepos = []
issue_num = 1113421
keywords = ['patch']
message_count = 3.0
messages = ['47636', '47637', '47638']
nosy_count = 4.0
nosy_names = ['georg.brandl', 'georg.brandl', 'rhettinger', 'francisgirard']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue1113421'
versions = ['Python 2.5']

[francisgirard]

Two tests in test_generators.py makes use of an ad-hoc
"LazyList" class which was a courageous attempt when it
was written. This class have some problems though. This
patch adds two more tests using the new itertools.tee
function which favourably solves the problem -- with
accompanying prose.
More importantly, it shows what I think is now the best way
to implement a whole family of classical FP algorithm in
Python.

The patch has been produce on the single file
test_generators.py (without directory information).

To apply it, change directory to :

python/dist/src/Lib/test

and simply,

patch -p0 < test_generators.py.310105.diff

The patch is here submitted after Craig Ringer had
suggested me to do so on the python discussion list
"python-list".

Francis Girard
FRANCE

[rhettinger]

Logged In: YES
user_id=80475

Reinhold, feel free to check this in for Py2.5.
Do parenthetically note that FP means "functional programming".

[birkenfeld]

Logged In: YES
user_id=1188172

Okay, committed as Lib/test/test_generators.py r1.47.