first, you may want to change the definition of your data frame, something like:
data = pd.DataFrame([[1.4,2.5,3.8,4.4,5.6],[6.2,7.6,8.8,9.1,0]]).T
which results this:
0 1
0 1.4 6.2
1 2.5 7.6
2 3.8 8.8
3 4.4 9.1
4 5.6 0.0
or:
data = pd.DataFrame({'A':[1.4,2.5,3.8,4.4,5.6],'B':[6.2,7.6,8.8,9.1,0]})
so that you get two columns, otherwise the other list is picked up as index; then:
data.apply(pd.Series.round)
or
import numpy as np
data.apply(np.round)
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