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Python Tasks & ML | Π—Π°Π΄Π°Ρ‡ΠΈ ΠΏΠΎ ΠΏΠΈΡ‚ΠΎΠ½Ρƒ ΠΈ ΠΌΠ°ΡˆΠΈΠ½Π½ΠΎΠΌΡƒ ΠΎΠ±ΡƒΡ‡Π΅Π½ΠΈΡŽ

Python Tasks & ML | Π—Π°Π΄Π°Ρ‡ΠΈ ΠΏΠΎ ΠΏΠΈΡ‚ΠΎΠ½Ρƒ ΠΈ ΠΌΠ°ΡˆΠΈΠ½Π½ΠΎΠΌΡƒ ΠΎΠ±ΡƒΡ‡Π΅Π½ΠΈΡŽ

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Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
[(Ρ…, Ρƒ) for Ρ… in range(3) if Ρ… % 2 == 0 for Ρƒ in range(3) if Ρƒ % 2 == 1]

Какой ΠΈΠ· Π²Π°Ρ€ΠΈΠ°Π½Ρ‚ΠΎΠ² Π½Π΅ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ [0, 4, 16]?
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Π”Π°Π½Ρ‹ 4 Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π° ΠΊΠΎΠ΄Π°:
#1
[Ρ… ** 2 for Ρ… in range(5) if Ρ… % 2 == 0]
#2
list(map(lambda x: x**2, filter(lambda x: x % 2 == 0, range(5))))
#3
res = []
for x in range(5):
    if x % 2 == 0:
        y = x**2
        res.append(y)
print(res)
#4
list(map(lambda x: x ** 2 % 4 == 0, range(5)))

ΠšΠ°ΠΊΡƒΡŽ ΠΈΠ· Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΉ Π½ΡƒΠΆΠ½ΠΎ явно ΠΈΠΌΠΏΠΎΡ€Ρ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ, Ρ‡Ρ‚ΠΎΠ±Ρ‹ Π΅Π΅ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚ΡŒ?
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Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
M = [[1, 2], [3, 4]]
N = [[5, 6], [7, 8]]
sum([col1*col2 for row1, row2 in zip(M, N) for col1, col2 in zip(row1, row2)])

Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
from functools import partial
from operator import lt
gt = partial(lt, 0)
l = list(filter(gt, [x for x in range(-1, 2) if x <= 0]))
print(l)

Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
from functools import partial
from operator import gt
gt = partial(gt, 0)
l = list(filter(gt, [x for x in range(-2, 3) if x >= 0]))
print(l)

Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
password = 'password'
adding = [Ρ… + Ρƒ for Ρ… in '0123456789' for Ρƒ in '0123456789']
count = 0
for a in adding:
    password = password + a
    count += 1
print(count, password[-3:])

Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
from functools import reduce
def f(acc, x):
    acc[x] = x * 2
    return acc
reduce(f, ["a", 3, (1,2)], {})

Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΠΊΠΎΠ΄?
import operator, functools
x1 = functools.reduce(operator.add, [2, 4, 6])
x2 = functools.reduce((lambda x, Ρƒ: x + Ρƒ) , [2, 4, 6])
print(x1 == x2)

Π’Ρ‹Π±Π΅Ρ€ΠΈΡ‚Π΅ ΠΏΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚
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ΠšΠ°ΠΊΡƒΡŽ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ программирования Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΠ΅Ρ‚ данная функция?
def f(function, sequence):
    s = sequence[0]
    for x in sequence[1:]:
        s = function(s, x)
    return s

Какой Π²Π°Ρ€ΠΈΠ°Π½Ρ‚ Π½Π΅ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ [1, 2, 3, 4]
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Python Tasks & ML | Π—Π°Π΄Π°Ρ‡ΠΈ ΠΏΠΎ ΠΏΠΈΡ‚ΠΎΠ½Ρƒ ΠΈ ΠΌΠ°ΡˆΠΈΠ½Π½ΠΎΠΌΡƒ ΠΎΠ±ΡƒΡ‡Π΅Π½ΠΈΡŽ - Statistics & analytics of Telegram channel @python_tasks