2015年6月 – ats-min.com

Month: 6月 2015

CheckIO: Feed Pigeons

2015年6月29日 / atsmin / 0 Comments

def iter_pigeons():
    i = 1
    while True:
        yield sum(range(1, i + 1))
        i += 1


def checkio(portions):
    pigeons = iter_pigeons()
    feeded = 0
    while True:
        hungry = next(pigeons)
        if portions <= hungry:
            return portions if portions > feeded else feeded
        else:
            portions = portions - hungry
            feeded = hungry


if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert checkio(1) == 1, "1st example"
    assert checkio(2) == 1, "2nd example"
    assert checkio(5) == 3, "3rd example"
    assert checkio(10) == 6, "4th example"

def iter_pigeons():

i = 1

while True:

yield sum(range(1, i + 1))

i += 1

def checkio(portions):

pigeons = iter_pigeons()

feeded = 0

while True:

hungry = next(pigeons)

if portions <= hungry:

return portions if portions > feeded else feeded

else:

portions = portions - hungry

feeded = hungry

if __name__ == '__main__':

#These "asserts" using only for self-checking and not necessary for auto-testing

assert checkio(1) == 1, "1st example"

assert checkio(2) == 1, "2nd example"

assert checkio(5) == 3, "3rd example"

assert checkio(10) == 6, "4th example"

http://www.checkio.org/mission/feed-pigeons/

CheckIO: Pawn Brotherhood

2015年6月23日 / atsmin / 0 Comments

import itertools

def safe_pawns(pawns):
    safe_squares = itertools.chain(*[calc_safe_squares(p) for p in pawns])
    return len(pawns & set(safe_squares))
    

def calc_safe_squares(pos):
    return (chr(ord(pos[0]) - 1) + str(int(pos[1]) + 1),
            chr(ord(pos[0]) + 1) + str(int(pos[1]) + 1))

if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"}) == 6
    assert safe_pawns({"b4", "c4", "d4", "e4", "f4", "g4", "e5"}) == 1

import itertools

def safe_pawns(pawns):

safe_squares = itertools.chain(*[calc_safe_squares(p) for p in pawns])

return len(pawns & set(safe_squares))

def calc_safe_squares(pos):

return (chr(ord(pos[0]) - 1) + str(int(pos[1]) + 1),

chr(ord(pos[0]) + 1) + str(int(pos[1]) + 1))

if __name__ == '__main__':

#These "asserts" using only for self-checking and not necessary for auto-testing

assert safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"}) == 6

assert safe_pawns({"b4", "c4", "d4", "e4", "f4", "g4", "e5"}) == 1

http://www.checkio.org/mission/pawn-brotherhood/

CheckIO: Speech Module

2015年6月22日 / atsmin / 0 Comments

FIRST_TEN = ["one", "two", "three", "four", "five", "six", "seven",
             "eight", "nine"]
SECOND_TEN = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
              "sixteen", "seventeen", "eighteen", "nineteen"]
OTHER_TENS = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy",
              "eighty", "ninety"]
HUNDRED = "hundred"


def checkio(number):
    second_tens = range(10, 20)    
    result = ''
    hundred, remain = number // 100, number % 100
    if hundred: result += FIRST_TEN[hundred - 1] + ' ' + HUNDRED + ' '
    if remain in second_tens:
        result += SECOND_TEN[remain - 10]
    else:
        ten, one = remain // 10, remain % 10
        if ten: result += OTHER_TENS[ten - 2] + ' '
        if one: result += FIRST_TEN[one - 1]
    return result.strip()
    

if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert checkio(4) == 'four', "1st example"
    assert checkio(133) == 'one hundred thirty three', "2nd example"
    assert checkio(12) == 'twelve', "3rd example"
    assert checkio(101) == 'one hundred one', "4th example"
    assert checkio(212) == 'two hundred twelve', "5th example"
    assert checkio(40) == 'forty', "6th example"
    assert not checkio(212).endswith(' '), "Don't forget strip whitespaces at the end of string"

FIRST_TEN = ["one", "two", "three", "four", "five", "six", "seven",

"eight", "nine"]

SECOND_TEN = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",

"sixteen", "seventeen", "eighteen", "nineteen"]

OTHER_TENS = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy",

"eighty", "ninety"]

HUNDRED = "hundred"

def checkio(number):

second_tens = range(10, 20)

result = ''

hundred, remain = number // 100, number % 100

if hundred: result += FIRST_TEN[hundred - 1] + ' ' + HUNDRED + ' '

if remain in second_tens:

result += SECOND_TEN[remain - 10]

else:

ten, one = remain // 10, remain % 10

if ten: result += OTHER_TENS[ten - 2] + ' '

if one: result += FIRST_TEN[one - 1]

return result.strip()

if __name__ == '__main__':

#These "asserts" using only for self-checking and not necessary for auto-testing

assert checkio(4) == 'four', "1st example"

assert checkio(133) == 'one hundred thirty three', "2nd example"

assert checkio(12) == 'twelve', "3rd example"

assert checkio(101) == 'one hundred one', "4th example"

assert checkio(212) == 'two hundred twelve', "5th example"

assert checkio(40) == 'forty', "6th example"

assert not checkio(212).endswith(' '), "Don't forget strip whitespaces at the end of string"

https://www.checkio.org/mission/speechmodule/

Python: Exchange rows and columns

2015年6月21日 / atsmin / 0 Comments

# ABC
# DEF
# GHI
>>> rows = ['ABC', 'DEF', 'GHI']
>>> cols = [''.join(x) for x in zip(*rows)]
>>> cols
['ADG', 'BEH', 'CFI']

# ABC

# DEF

# GHI

>>> rows = ['ABC', 'DEF', 'GHI']

>>> cols = [''.join(x) for x in zip(*rows)]

>>> cols

['ADG', 'BEH', 'CFI']

CheckIO: Xs and Os Referee

2015年6月21日 / atsmin / 0 Comments

def checkio(rows):
    cols = [''.join([rows[y][x] for y in range(3)]) for x in range(3)]
    digs = [''.join([rows[x][x] for x in range(3)]),
            ''.join([rows[x][2 - x] for x in range(3)])]
            
    triples = rows + cols + digs
    for check in triples:
        winner = x_or_o(check)
        if winner: return winner
    return 'D'
    
def x_or_o(triple):
    if triple.count('X') == 3:
        return 'X'
    elif triple.count('O') == 3:
        return 'O'
    else:
        return
    
if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert checkio([
        "X.O",
        "XX.",
        "XOO"]) == "X", "Xs wins"
    assert checkio([
        "OO.",
        "XOX",
        "XOX"]) == "O", "Os wins"
    assert checkio([
        "OOX",
        "XXO",
        "OXX"]) == "D", "Draw"
    assert checkio([
        "O.X",
        "XX.",
        "XOO"]) == "X", "Xs wins again"

def checkio(rows):

cols = [''.join([rows[y][x] for y in range(3)]) for x in range(3)]

digs = [''.join([rows[x][x] for x in range(3)]),

''.join([rows[x][2 - x] for x in range(3)])]

triples = rows + cols + digs

for check in triples:

winner = x_or_o(check)

if winner: return winner

return 'D'

def x_or_o(triple):

if triple.count('X') == 3:

return 'X'

elif triple.count('O') == 3:

return 'O'

else:

return

if __name__ == '__main__':

#These "asserts" using only for self-checking and not necessary for auto-testing

assert checkio([

"X.O",

"XX.",

"XOO"]) == "X", "Xs wins"

assert checkio([

"OO.",

"XOX",

"XOX"]) == "O", "Os wins"

assert checkio([

"OOX",

"XXO",

"OXX"]) == "D", "Draw"

assert checkio([

"O.X",

"XX.",

"XOO"]) == "X", "Xs wins again"

http://www.checkio.org/mission/x-o-referee/

CheckIO: The Most Wanted Letter

2015年6月21日 / atsmin / 0 Comments

from string import ascii_lowercase

def checkio(text):
    letters = [x for x in text.lower() if x in ascii_lowercase]
    counts = sorted({x : letters.count(x) for x in letters}.items(), key=lambda x:x[1], reverse=True)
    wanted_count = counts[0][1]
    wanted = sorted([x[0] for x in counts if x[1] == wanted_count])[0]
    return wanted

if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert checkio("Hello World!") == "l", "Hello test"
    assert checkio("How do you do?") == "o", "O is most wanted"
    assert checkio("One") == "e", "All letter only once."
    assert checkio("Oops!") == "o", "Don't forget about lower case."
    assert checkio("AAaooo!!!!") == "a", "Only letters."
    assert checkio("abe") == "a", "The First."
    print("Start the long test")
    assert checkio("a" * 9000 + "b" * 1000) == "a", "Long."
    print("The local tests are done.")

from string import ascii_lowercase

def checkio(text):

letters = [x for x in text.lower() if x in ascii_lowercase]

counts = sorted({x : letters.count(x) for x in letters}.items(), key=lambda x:x[1], reverse=True)

wanted_count = counts[0][1]

wanted = sorted([x[0] for x in counts if x[1] == wanted_count])[0]

return wanted

if __name__ == '__main__':

#These "asserts" using only for self-checking and not necessary for auto-testing

assert checkio("Hello World!") == "l", "Hello test"

assert checkio("How do you do?") == "o", "O is most wanted"

assert checkio("One") == "e", "All letter only once."

assert checkio("Oops!") == "o", "Don't forget about lower case."

assert checkio("AAaooo!!!!") == "a", "Only letters."

assert checkio("abe") == "a", "The First."

print("Start the long test")

assert checkio("a" * 9000 + "b" * 1000) == "a", "Long."

print("The local tests are done.")

http://www.checkio.org/mission/most-wanted-letter/

Python: datetime.today()

2015年6月21日 / atsmin / 0 Comments

datetime.today() does’t return today’s date only but today’s datetime. And using datetime.combine, date object can be converted to datetime.

>>> from datetime import datetime, date

# datetime.today() returns datetime not only date
>>> datetime.today()
datetime.datetime(2015, 6, 21, 15, 19, 33, 753232)
>>> datetime.now()
datetime.datetime(2015, 6, 21, 15, 19, 37, 753692)

# to get today's date only
>>> datetime.today().date()
datetime.date(2015, 6, 21)
>>> date.today()
datetime.date(2015, 6, 21)

# convert date to datetime
>>> datetime.combine(date.today(), datetime.min.time())
datetime.datetime(2015, 6, 21, 0, 0)

>>> from datetime import datetime, date

# datetime.today() returns datetime not only date

>>> datetime.today()

datetime.datetime(2015, 6, 21, 15, 19, 33, 753232)

>>> datetime.now()

datetime.datetime(2015, 6, 21, 15, 19, 37, 753692)

# to get today's date only

>>> datetime.today().date()

datetime.date(2015, 6, 21)

>>> date.today()

datetime.date(2015, 6, 21)

# convert date to datetime

>>> datetime.combine(date.today(), datetime.min.time())

datetime.datetime(2015, 6, 21, 0, 0)

Python: calculate weeks or months

2015年6月14日 / atsmin / 0 Comments

from dateutil.relativedelta import relativedelta
from datetime import datetime

today = datetime.today()
today.strftime('%Y-%m-%d')
# '2015-06-14'
next_week = today + relativedelta(weeks=1)
next_week.strftime('%Y-%m-%d')
# '2015-06-21'
next_month = today + relativedelta(months=1)
next_month.strftime('%Y-%m-%d')
# '2015-07-14'

from calendar import monthrange
lastday_of_month = monthrange(2015, 6)[1]
lastday_of_month
# 30

from dateutil.relativedelta import relativedelta

from datetime import datetime

today = datetime.today()

today.strftime('%Y-%m-%d')

# '2015-06-14'

next_week = today + relativedelta(weeks=1)

next_week.strftime('%Y-%m-%d')

# '2015-06-21'

next_month = today + relativedelta(months=1)

next_month.strftime('%Y-%m-%d')

# '2015-07-14'

from calendar import monthrange

lastday_of_month = monthrange(2015, 6)[1]

lastday_of_month

# 30

stackoverflow.com/questions/42950/get-last-day-of-the-month-in-python

Django: copy model instance

2015年6月9日 / atsmin / 0 Comments

To copy model instance, replacing pk value is the easiest way.

obj = Foo.objects.get(pk="foo")
obj.pk = "bar"
obj.save()

obj = Foo.objects.get(pk="foo")

obj.pk = "bar"

obj.save()

http://stackoverflow.com/questions/4733609/how-do-i-clone-a-django-model-instance-object-and-save-it-to-the-database

ats-min.com

Just another programmer's site

Month: 6月 2015

CheckIO: Feed Pigeons

CheckIO: Pawn Brotherhood

CheckIO: Speech Module

Python: Exchange rows and columns

CheckIO: Xs and Os Referee

CheckIO: The Most Wanted Letter

Python: datetime.today()

Python: calculate weeks or months

Django: copy model instance

ats-min.com

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