在joblib中打印函数的输出

Question

我正在尝试使用joblib来并行化在函数上运行的循环。我希望显示函数的中间打印命令，而不仅仅是函数的返回值。

from joblib import Parallel, delayed

def dummy(i):
    print("the value passed is",i)

Parallel(n_jobs=2)(delayed(dummy)(i) for i in range(0,5,1))

我得到以下输出：

[None,
 None,
 None,
 None,
 None]

我希望获得以下输出（或类似输出）：

[the value passed is 0,
the value passed is 1,
the value passed is 2,
the value passed is 3,
the value passed is 4]

编辑：我刚刚注意到它确实会在启动Jupyter笔记本的终端窗口中打印我所需的输出。有没有关于如何在我的笔记本上打印的想法。提前谢谢。

Answer 1

from joblib import Parallel, delayed

def dummy(i):
    return "the value passed is " + str(i)

Parallel(n_jobs=2)(delayed(dummy)(i) for i in range(0,5,1))

输出：：

[the value passed is 0,
the value passed is 1,
the value passed is 2,
the value passed is 3,
the value passed is 4]