Python常用代码

1

sorted_obj = {k: v for k, v in sorted(obj.items(), key=lambda item: item[1], reverse=True)}

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12

from multiprocessing import Pool
import os

def f(x):
    print('Child process id:', os.getpid())
    
    return x*2

if __name__ == '__main__':
    with Pool(5) as p:
        results = p.map(f, [1, 2, 3])
    print(results)