How to convert a string with comma-delimited items to a list in Python

Question

How do you convert a string into a list   Say the string is like text    a b c   After the conversion  text      a    b    c   and hopefully text 0      a   text 1      b

User · Accepted Answer

Like this    gt  gt  gt  text    a b c   gt  gt  gt  text   text split       gt  gt  gt  text    a    b    c      Alternatively  you can use eval   if you trust the string to be safe    gt  gt  gt  text    a b c   gt  gt  gt  text   eval       text

User · Answer

I usually use   l     word strip   for word in text split          the strip remove spaces around words

User · Answer

m      1 2 3   4 5 6   7 8 9     m  eval m split   0      1  2  3    4  5  6    7  8  9

User · Answer

split   is your friend here   I will cover a few aspects of split   that are not covered by other answers   If no arguments are passed to split    it would split the string based on whitespace characters  space  tab  and newline   Leading and trailing whitespace is ignored  Also  consecutive whitespaces are treated as a single delimiter   Example   gt  gt  gt   quot     t t none  two    three t t tfour nfive n n quot  split     one    two    three    four    five     When a single character delimiter is passed  split   behaves quite differently from its default behavior  In this case  leading trailing delimiters are not ignored  repeating delimiters are not  quot coalesced quot  into one either   Example   gt  gt  gt   quot   one two three   n four tfive quot  split                one    two    three         n four tfive    So  if stripping of whitespaces is desired while splitting a string based on a non-whitespace delimiter  use this construct  words    item strip   for item in string split         When a multi-character string is passed as the delimiter  it is taken as a single delimiter and not as a character class or a set of delimiters   Example   gt  gt  gt   quot one two three  four quot  split         one two three    four    To coalesce multiple delimiters into one  you would need to use re split regex  string  approach   See the related posts below   Related  string split   - Python documentation re split   - Python documentation Split string based on regex Split string based on a regular expression

User · Answer

I don t think you need to  In python you seldom need to convert a string to a list  because strings and lists are very similar  Changing the type  If you really have a string which should be a character array  do this   In  1   x    foobar  In  2   list x  Out 2     f    o    o    b    a    r     Not changing the type  Note that Strings are very much like lists in python  Strings have accessors  like lists  In  3   x 0  Out 3    f    Strings are iterable  like lists  In  4   for i in range len x             print x i            f o o b a r   TLDR  Strings are lists  Almost

User · Answer

To convert a string having the form a    1  3    2  -6    I wrote yet not optimized code   matrixAr      mystring      1  3    2  -4    19  -15    b mystring replace          replace            to remove head    and tail    for line in b split              row  list map int line split         map   to convert the number from string  some has also space   to integer     matrixAr append row  print matrixAr

User · Answer

All answers are good  there is another way of doing  which is list comprehension  see the solution below    u    UUUDDD   lst    x for x in u    for comma separated list do the following   u    U U U D D D   lst    x for x in u split

User · Answer

Using functional Python   text filter lambda x x      map str text

User · Answer

The following Python code will turn your string into a list of strings   import ast teststr      aaa   bbb   ccc    testarray   ast literal eval teststr

User · Answer

In case you want to split by spaces  you can just use  split     a    mary had a little lamb  z   a split   print z   Output     mary    had    a    little    lamb

User · Answer

to strip     and     from a string - gt    gt  gt  gt   a b c   translate None         abc    You should use the built-in translate method for strings     Type help  abc  translate  at Python shell for more info

User · Answer

Example 1   gt  gt  gt  email   myemailid gmail com   gt  gt  gt  email split    OUTPUT   myemailid gmail com     Example 2   gt  gt  gt  email   myemailid gmail com  someonsemailid gmail com   gt  gt  gt  email split       OUTPUT   myemailid gmail com    someonsemailid gmail com

User · Answer

If you actually want arrays    gt  gt  gt  from array import array  gt  gt  gt  text    a b c   gt  gt  gt  text   text replace           gt  gt  gt  myarray   array  c   text   gt  gt  gt  myarray array  c    abc    gt  gt  gt  myarray 0   a   gt  gt  gt  myarray 1   b    If you do not need arrays  and only want to look by index at your characters  remember a string is an iterable  just like a list except the fact that it is immutable    gt  gt  gt  text    a b c   gt  gt  gt  text   text replace           gt  gt  gt  text 0   a

User · Answer

Just to add on to the existing answers  hopefully  you ll encounter something more like this in the future    gt  gt  gt  word    abc   gt  gt  gt  L   list word   gt  gt  gt  L   a    b    c    gt  gt  gt     join L   abc    But what you re dealing with right now  go with  Cameron s answer    gt  gt  gt  word    a b c   gt  gt  gt  L   word split       gt  gt  gt  L   a    b    c    gt  gt  gt      join L   a b c

[python] How to convert a string with comma-delimited items to a list in Python?

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