Python (numpy) sort character order?

Question

What is the sorting order of characters in Python (or numpy)? is there any table?

[In] : np.sort(["a","c","b","-"])
[Out]: array(['-', 'a', 'b', 'c'], 
       dtype='|S1')
[In] : np.sort(["a","c","b","78"])
[Out]: array(['78', 'a', 'b', 'c'], 
       dtype='|S1')

Is there anything which would sort after the letters? Or, alternately, how is this order decided? I tried a lot of special characters, they all sort in the front.

sorted()

behaves the same way.

The ~, {, |, } characters and the del special character are the only characters that come after letters in the ASCII table. — SethMMorton
– SethMMorton, Commented Sep 27, 2014 at 5:47

OregonTrail · Accepted Answer · 2014-09-27 03:39:24Z

1

The builtin ord() returns the value of an 8-bit character.

Try ord('a') etc.

In [1]: ord('a')
Out[1]: 97

In [2]: ord('&')
Out[2]: 38

chr(97) is the inverse of ord('a')

In [3]: table = {i: chr(i) for i in xrange(i)}

In [4]: table
...

edited Sep 27, 2014 at 3:39

answered Sep 27, 2014 at 3:24

OregonTrail

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