a, b = b, a

text = """
这是一段
多行文本
"""

[x for x in range(10) if x % 2 == 0]

unique = list(set(duplicates))

result = "正数" if x > 0 else "非正数"

reversed_list = list[::-1]

{**dict1, **dict2}

",".join(list)

0 < x < 10

from collections import Counter
Counter(list)

from collections import defaultdict
d = defaultdict(int)

from collections import namedtuple
Point = namedtuple('Point', ['x', 'y'])

# pipe 风格
( x * 2 | str | len )

[list[i:i+n] for i in range(0, len(list), n)]

any(x > 0 for x in list)
all(x > 0 for x in list)

[item for sublist in list for item in sublist]

for i, v in enumerate(list):
    pass

x = a if condition else b

x % 2 == 0  # 或
x & 1 == 0

[0] * 10  # [0,0,0,...]

a, *b, c = [1, 2, 3, 4, 5]
# a=1, b=[2,3,4], c=5

def add(a):
    return lambda b: a + b

lazy = lambda: expensive_func()

from itertools import islice
def window(seq, n=2):
    it = iter(seq)
    result = tuple(islice(it, n))
    if len(result) == n:
        yield result
    for elem in it:
        result = result[1:] + (elem,)
        yield result

Counter(list).most_common(1)[0]

dict.get(key, default)

dict(zip(keys, values))

f"{name} is {age} years old"

isinstance(x, (int, float))

# 生成器表达式代替列表推导式
(x**2 for x in range(1000000))