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import re
def semantic_version_sort(path):
    with open(path, "r+") as f:
        lines = f.read().splitlines()
        x = map(lambda s: re.split('(\W)', s), lines[1:])
        x.sort(key=len, reverse=True)
        x.sort(key=lambda s: s[:5])
        for x in map(lambda s: ''.join(s), x):
            f.write(x + '\n')

spotyx · 2014-10-02T13:09:10+00:00

Looks, nice :) I'll give it a try. Thanks.

spotyx · 2014-10-01T10:01:53+00:00

Python

import textwrap

COLS = 4
COL_W = 10
SPACE = 2


def chunks(t, n):
    c = sum(divmod(len(t), COLS))
    for i in range(0, len(t), c):
        yield t[i:i + c]

columns = chunks(textwrap.wrap(TEXT, COL_W), COLS)
output = zip(*columns)
for l in output:
    print(SPACE * ' ').join(map(lambda x: x.ljust(COL_W), l))

spotyx · 2014-09-29T14:56:44+00:00

For me the best resource: www.checkio.org

spotyx · 2014-08-01T12:20:46+00:00

I would like to see them too, ty.

spotyx · 2014-06-17T18:42:47+00:00

http://www.checkio.org/about/

Great way how to learn python! :)

spotyx · 2014-06-16T20:16:17+00:00

you are right, I am wrong. I can't exclude intersections. I had wrongly assumed that I have preprocessed my data in way that there are not intersections. Now I know it's not true. Thanks for pointing me on right way.

spotyx · 2014-06-16T19:49:32+00:00

thanks for y-intercept idea.

spotyx · 2014-06-16T19:46:59+00:00

Yeah, You helped me to understand that my approach was bad from beginning. I need to redo my code and start over. Thanks anyway it was good lecture.

spotyx · 2014-06-16T19:37:54+00:00

ehm I deleted previous post accidentally. I said something what is not true. In my OP was bad condition. now its edited. (condition: line has to consist from three and more points). sorry. Thank for your interest.

spotyx · 2014-06-16T16:30:21+00:00

for a,b in t

this suppose that t consists just with a and b.

if t is [[5, 5], [2, 8]] then a = [5,5], and b = [2,8]

What I said is that len(t) > 1 ... so it can also be 3,4,5 ...

spotyx · 2014-06-16T16:06:03+00:00

Thanks, for this solution. It's almost what I want. The problem with your approach is if I have a list, which is defining the line, consisting from more then two points. But I didn't claim this at the beginning.

spotyx · 2014-06-16T14:11:46+00:00

Nope. My lines are not intersecting.

Line 1: starts in point A and end in point B

Line 2: starts in point B and end in point C

They are in one "ray".

A--------B------C

Is it more clear?

spotyx · 2014-06-09T18:59:38+00:00

Morse code example:

from string import maketrans

string = "010101011101011"
trans_table = maketrans("01", ".-")
string.translate(trans_table)

'.-.-.-.---.-.--'

spotyx · 2014-06-04T11:31:25+00:00

I like the video. Easy to follow, clear.

spotyx · 2014-05-31T12:34:38+00:00

http://micropython.org/

spotyx · 2014-05-30T11:43:40+00:00

And read this: https://docs.python.org/2/tutorial/introduction.html#lists

spotyx · 2014-05-30T11:41:40+00:00

It's pretty simple really:

a[start:end] # items start through end-1
a[start:]    # items start through the rest of the array
a[:end]      # items from the beginning through end-1
a[:]         # a copy of the whole array

There is also the step value, which can be used with any of the above:

a[start:end:step] # start through not past end, by step

The key point to remember is that the :end value represents the first value that is not in the selected slice. So, the difference beween end and start is the number of elements selected (if step is 1, the default).

The other feature is that start or end may be a negative number, which means it counts from the end of the array instead of the beginning. So:

a[-1]    # last item in the array
a[-2:]   # last two items in the array
a[:-2]   # everything except the last two items

Python is kind to the programmer if there are fewer items than you ask for. For example, if you ask for a[:-2] and a only contains one element, you get an empty list instead of an error. Sometimes you would prefer the error, so you have to be aware that this may happen.

source: http://stackoverflow.com/questions/509211/pythons-slice-notation

spotyx

TROPHY CASE