How to sort a list of strings

Question

What is the best way of creating an alphabetically sorted list in Python

User · Answer

But how does this handle language specific sorting rules? Does it take locale into account?

No, list.sort() is a generic sorting function. If you want to sort according to the Unicode rules, you'll have to define a custom sort key function. You can try using the pyuca module, but I don't know how complete it is.

User · Answer

The proper way to sort strings is   import locale locale setlocale locale LC ALL   en US UTF-8     vary depending on your lang locale assert sorted  u Ab   u ad   u aa    cmp locale strcoll      u aa   u Ab   u ad      Without using locale strcoll you get  assert sorted  u Ab   u ad   u aa        u Ab   u aa   u ad     The previous example of mylist sort key lambda x  x lower    will work fine for ASCII-only contexts

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Or maybe    names     Jasmine    Alberto    Ross    dig-dog   print   The solution for this is about this names being sorted   sorted names  key lambda name name lower

User · Answer

Please use sorted   function in Python3  items     love    like    play    cool    my   sorted items2

User · Answer

Suppose s    ZWzaAd    To sort above string the simple solution will be below one   print    join sorted s

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Basic answer   mylist     b    C    A   mylist sort     This modifies your original list  i e  sorts in-place   To get a sorted copy of the list  without changing the original  use the sorted   function   for x in sorted mylist       print x   However  the examples above are a bit naive  because they don t take locale into account  and perform a case-sensitive sorting  You can take advantage of the optional parameter key to specify custom sorting order  the alternative  using cmp  is a deprecated solution  as it has to be evaluated multiple times - key is only computed once per element    So  to sort according to the current locale  taking language-specific rules into account  cmp to key is a helper function from functools    sorted mylist  key cmp to key locale strcoll     And finally  if you need  you can specify a custom locale for sorting   import locale locale setlocale locale LC ALL   en US UTF-8     vary depending on your lang locale assert sorted  u Ab   u ad   u aa      key cmp to key locale strcoll       u aa   u Ab   u ad     Last note  you will see examples of case-insensitive sorting which use the lower   method - those are incorrect  because they work only for the ASCII subset of characters  Those two are wrong for any non-English data     this is incorrect  mylist sort key lambda x  x lower      alternative notation  a bit faster  but still wrong mylist sort key str lower

User · Answer

Old question  but if you want to do locale-aware sorting without setting locale LC ALL you can do so by using the PyICU library as suggested by this answer   import icu   PyICU  def sorted strings strings  locale None       if locale is None         return sorted strings      collator   icu Collator createInstance icu Locale locale       return sorted strings  key collator getSortKey    Then call with e g    new list   sorted strings list of strings   de DE utf8     This worked for me without installing any locales or changing other system settings    This was already suggested in a comment above  but I wanted to give it more prominence  because I missed it myself at first

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It is simple  https   trinket io library trinkets 5db81676e4  scores    54 - Alice 35 - Bob 27 - Carol 27 - Chuck 05 - Craig 30 - Dan 27 - Erin 77 - Eve 14 - Fay 20 - Frank 48 - Grace 61 - Heidi 03 - Judy 28 - Mallory 05 - Olivia 44 - Oscar 34 - Peggy 30 - Sybil 82 - Trent 75 - Trudy 92 - Victor 37 - Walter    scores   scores split      for x in sorted scores     print x

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It is also worth noting the sorted   function   for x in sorted list       print x   This returns a new  sorted version of a list without changing the original list

User · Answer

l    abc     cd     xy     ba     dc   l sort   print l1    Result        abc    ba    cd    dc    xy

User · Answer

list sort     It really is that simple

[python] How to sort a list of strings?

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