Select rows of pandas dataframe from list, in order of list

Question

The question was originally asked here as a comment but could not get a proper answer as the question was marked as a duplicate.

For a given pandas.Da

Answer 1

1] Generic approach for list_of_values.

In [936]: dff = df[df.A.isin(list_of_values)]

In [937]: dff.reindex(dff.A.map({x: i for i, x in enumerate(list_of_values)}).sort_values().index)
Out[937]:
   A  B
2  3  3
3  4  5
1  6  2

2] If list_of_values is sorted. You can use

In [926]: df[df.A.isin(list_of_values)].sort_values(by='A')
Out[926]:
   A  B
2  3  3
3  4  5
1  6  2