[Python] How can I split a column of tuples in a Pandas dataframe?

I have a Pandas dataframe (this is only a little piece)

>>> d1
y norm test y norm train len(y_train) len(y_test) \
0 64.904368 116.151232 1645 549
1 70.852681 112.639876 1645 549

SVR RBF \
0 (35.652207342877873, 22.95533537448393)
1 (39.563683797747622, 27.382483096332511)

LCV \
0 (19.365430594452338, 13.880062435173587)
1 (19.099614489458364, 14.018867136617146)

RIDGE CV \
0 (4.2907610988480362, 12.416745648065584)
1 (4.18864306788194, 12.980833914392477)

RF \
0 (9.9484841581029428, 16.46902345373697)
1 (10.139848213735391, 16.282141345406522)

GB \
0 (0.012816232716538605, 15.950164822266007)
1 (0.012814519804493328, 15.305745202851712)

ET DATA
0 (0.00034337162272515505, 16.284800366214057) j2m
1 (0.00024811554516431878, 15.556506191784194) j2m
>>>


I want to split all the columns that contain tuples. For example, I want to replace the column LCV with the columns LCV-a and LCV-b.

How can I do that?

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