I need to find the quickest way to sort each row in a dataframe with millions of rows and around a hundred columns.
So something like this:
A B C
To Add to the answer given by @Andy-Hayden, to do this inplace to the whole frame... not really sure why this works, but it does. There seems to be no control on the order.
In [97]: A = pd.DataFrame(np.random.randint(0,100,(4,5)), columns=['one','two','three','four','five'])
In [98]: A
Out[98]:
one two three four five
0 22 63 72 46 49
1 43 30 69 33 25
2 93 24 21 56 39
3 3 57 52 11 74
In [99]: A.values.sort
Out[99]:
In [100]: A
Out[100]:
one two three four five
0 22 63 72 46 49
1 43 30 69 33 25
2 93 24 21 56 39
3 3 57 52 11 74
In [101]: A.values.sort()
In [102]: A
Out[102]:
one two three four five
0 22 46 49 63 72
1 25 30 33 43 69
2 21 24 39 56 93
3 3 11 52 57 74
In [103]: A = A.iloc[:,::-1]
In [104]: A
Out[104]:
five four three two one
0 72 63 49 46 22
1 69 43 33 30 25
2 93 56 39 24 21
3 74 57 52 11 3
I hope someone can explain the why of this, just happy that it works 8)