use ycimpute.EM(None)
In [27]: from ycimpute.imputer import EM
In [28]: EM().complete(boston_mis)
Out[28]:
array([[ 6.32000000e-03, 1.80000000e+01, 2.31000000e+00, ...,
1.53000000e+01, 3.96900000e+02, 4.98000000e+00],
[ 2.73100000e-02, 0.00000000e+00, 6.86338180e+00, ...,
1.78000000e+01, 3.96900000e+02, 9.14000000e+00],
[ 2.72900000e-02, 2.13844999e+01, 7.07000000e+00, ...,
1.72570927e+01, 3.92830000e+02, 6.44215079e+00],
...,
[ 6.07600000e-02, 0.00000000e+00, 1.19300000e+01, ...,
2.10000000e+01, 3.96900000e+02, 5.64000000e+00],
[ 1.09590000e-01, 0.00000000e+00, 1.19300000e+01, ...,
2.10000000e+01, 3.93450000e+02, 6.48000000e+00],
[ 4.74100000e-02, 0.00000000e+00, 1.19300000e+01, ...,
2.10000000e+01, 3.96900000e+02, 7.88000000e+00]])