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?????Python??????????????????

?????????

sum = [reduce(lambda x, y: (x + 1) * 2, range(1, (13 - j))) for j in range(2, 12)]
print(sum)

??reduce???????????????????????????????????????????????????

???????

su = [i for i in range(2, 101) if 0 not in [i % j for j in range(2, i - 1)]]
print(su)
prime = filter(lambda x: not [x % i for i in range(2, x) if x % i == 0], range(2, 101))
print(list(prime))

???????????2?100??????????????????????????????????????????filter????????????lambda?????????????

???????

from enum import Enum
for index in enumerate(y):
    print(index)

??enumerate??????????????????????????????????????????????

?????????

x = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
x1 = [[i[w] for i in x] for w in range(len(x[0]))]
print(x1)

???????????????????????????????????????????????

??????

sh = [i for i in range(100, 1000) if i == sum(int(j) ** 3 for j in str(i))]
print(sh)

????????????????????????????????????100?999??????????

?????????

def c(n, m):
    if n == m:
        return 1
    else:
        def j(n):
            if n == 1:
                return 1
            else:
                return n * j(n - 1)
    return j(n) / (j(m) * j(n - m))
print(c(4, 2))
def y(t):
    x1 = [1]
    x2 = [1, 1]
    for i in range(t):
        if i == 0:
            print(x1)
        elif i == 1:
            print(x2)
        else:
            x3 = []
            x3.append(1)
            for j in range(1, i):
                x3.append(x2[j] + x2[j - 1])
            x3.append(1)
            x2 = x3
            print(x3)
y(9)

???????????????????????????????????????????????????????

????????

def str(*n):
    s, l = 0, 0
    for i in n:
        if i.isupper():
            s += 1
        if i.islower():
            l += 1
    return s, l
x = ("A", "S", "d", "w", "Q")
print(str(*x))

??????????????????????????????????????????

?????

def resort(l, k):
    x = l[:k]
    x.reverse()
    y = l[k:]
    y.reverse()
    r = x + y
    return list(reversed(r))
li = list(range(20))
print(resort(li, 5))

??????????k???k???????????????????????????????????

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