mahmoud

# "in" faster than re search for single character searches
# PS also held true for longer strings

$ python -m timeit -s 'import re; _re = re.compile("[{]",re.UNICODE); target = "wwoooo{ooo"' '_re.search(target)'
10000000 loops, best of 3: 0.159 usec per loop
$ python -m timeit -s 'target = "wwoooo{ooo"' '"{" in target'
10000000 loops, best of 3: 0.0269 usec per loop

#####

mahmoud

class MyType(object):
    def __init__(self, func):
        self.func = func

    def __int__(self):
        return int(self.func())

    def __float__(self):
        return float(self.func())

mahmoud

~/work/support$ git status
On branch master
Your branch is up-to-date with 'origin/master'.

nothing to commit, working directory clean
~/work/support$ cd ..
~/work$ cd support
~/work/support$ git status
On branch master
Your branch is ahead of 'origin/master' by 1 commit.

mahmoud

def main():
    assert gen_matrix(4, 3) == [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
    print_matrix(gen_matrix(4, 6))

# 1, 2, 3, 4, 8, 12, 11, 10, 9, 5, 6, 7


def gen_matrix(width, height):
    ret = [range(1 + width * ih, 1 + width * (ih + 1)) for ih in range(height)]

mahmoud

046     >>> sorted([k for k, v in mro_items(int) if not (callable(v) or isinstance(v, type(int.__int__)))])
Expected:
    ['__class__', '__doc__', '__doc__', 'denominator', 'imag', 'numerator', 'real']
Got:
    ['__class__', '__doc__', '__doc__', '__new__', '__new__', '__subclasshook__', 'denominator', 'imag', 'numerator', 'real']

mahmoud

Feedback scores should be based on simple +1/-1 semantics are by far the most prevalent among consumer sites(eBay/Amazon/YouTube/Reddit/StackOverflow) and seem effective. However, I think the score displayed should be twofold: all-time cumulative, as well as weighted. With the rise of the "trending" classification system, a user should be able to quickly discern whether a score is recent.

Another alternative in this vein would be to have "rounds" of scoring. That is, cumulative score is permanent, and while it can be impressive, in all cases it appears to stagnate. But scores within the round are more dynamic. The thrill of a new round, experiments with strategies, and end-run pushes for big finishes are all there.

One disadvantage of both arrangements is the potential for accidental alienation of experienced users. Precious few users use a site forever, but overaccentuating the passage of time can certainly accelerate losing the old guard. Every site is different, and careful assessment of this risk is cr

mahmoud

The encoding keyword argument to the Python 3 str() and Python 2 unicode() constructors is excessively constraining to the practical use of these core types.

Looking at common usage, both these constructors' primary mode is to convert various objects into text:

>>> str(2)
'2'

But adding an encoding yields:

>>> str(2, encoding='utf8')

mahmoud

(Pdb) pp [x['info']['name'] for x in pkg_info_map.pkg_infos.values() if x.get('info', {}).get('downloads', {}).get('last_day', 0) > 5000 and x['info']['version'].startswith('0')]
[u'alembic',
 u'carbon',
 u'cffi',
 u'cmd2',
 u'colorama',
 u'cryptography',
 u'eventlet',
 u'extras',
 u'Flask',

mahmoud

import json

json_template = """\
{"test_list": [],
 "test_obj": {"test_num": 0.0}}
"""

obj_dict = json.loads(json_template)
obj_dict['test_obj']['test_num'] = 1.0

mahmoud

def close_range(start, step=1, count=None):
    i, orig_step = 0, step
    if count is None:
        count = start / step
    while i < count:
        yield start + (i * step)
        step *= -1
        if step != orig_step:
            i += 1
    return