Python data structure sort list alphabetically

Question

I am a bit confused regarding data structure in python         and     I am trying to sort a simple list  probably since I cannot identify the type of data I am failing to sort it   My list is simple    Stem    constitute    Sedge    Eflux    Whim    Intrigue     My question is what type of data this is  and how to sort the words alphabetically

User · Answer

You can use built-in sorted function   print sorted   Stem    constitute    Sedge    Eflux    Whim    Intrigue

User · Answer

Python has a built-in function called sorted  which will give you a sorted list from any iterable you feed it  such as a list   1 2 3    a dict   1 2 3 4   although it will just return a sorted list of the keys  a set   1 2 3 4   or a tuple   1 2 3 4       gt  gt  gt  x    3 2 1   gt  gt  gt  sorted x   1  2  3   gt  gt  gt  x  3  2  1    Lists also have a sort method that will perform the sort in-place  x sort   returns None but changes the x object      gt  gt  gt  x    3 2 1   gt  gt  gt  x sort    gt  gt  gt  x  1  2  3    Both also take a key argument  which should be a callable  function lambda  you can use to change what to sort by  For example  to get a list of  key value -pairs from a dict which is sorted by value you can use the following code    gt  gt  gt  x    3 2 2 1 1 5   gt  gt  gt  sorted x items    key lambda kv  kv 1      Items returns a list of   key value  -pairs   2  1    3  2    1  5

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gt  gt  gt  a       gt  gt  gt  type a   lt type  tuple  gt   gt  gt  gt  a       gt  gt  gt  type a   lt type  list  gt   gt  gt  gt  a       gt  gt  gt  type a   lt type  dict  gt   gt  gt  gt  a      Stem    constitute    Sedge    Eflux    Whim    Intrigue     gt  gt  gt  a sort    gt  gt  gt  a   Eflux    Intrigue    Sedge    Stem    Whim    constitute    gt  gt  gt

User · Answer

You re dealing with a python list  and sorting it is as easy as doing this   my list     Stem    constitute    Sedge    Eflux    Whim    Intrigue   my list sort

User · Answer

denotes a list     denotes a tuple and    denotes a dictionary  You should take a look at the official Python tutorial as these are the very basics of programming in Python   What you have is a list of strings  You can sort it like this   In  1   lst     Stem    constitute    Sedge    Eflux    Whim    Intrigue    In  2   sorted lst  Out 2     Eflux    Intrigue    Sedge    Stem    Whim    constitute     As you can see  words that start with an uppercase letter get preference over those starting with a lowercase letter  If you want to sort them independently  do this   In  4   sorted lst  key str lower  Out 4     constitute    Eflux    Intrigue    Sedge    Stem    Whim     You can also sort the list in reverse order by doing this   In  12   sorted lst  reverse True  Out 12     constitute    Whim    Stem    Sedge    Intrigue    Eflux    In  13   sorted lst  key str lower  reverse True  Out 13     Whim    Stem    Sedge    Intrigue    Eflux    constitute     Please note  If you work with Python 3  then str is the correct data type for every string that contains human-readable text  However  if you still need to work with Python 2  then you might deal with unicode strings which have the data type unicode in Python 2  and not str  In such a case  if you have a list of unicode strings  you must write key unicode lower instead of key str lower

User · Answer

ListName sort   will sort it alphabetically  You can add reverse False True in the brackets to reverse the order of items  ListName sort reverse False

[python] Python data structure sort list alphabetically

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