adding elements to python tuples

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  • Uwe Mayer
    #1

    adding elements to python tuples

    Hi,

    is it possible to append new elements to a tuple? I know tuples are
    immutable and that this would mean to create a new tuple with one more
    element, but how do you do it?

    i.e. i have (1,2,3) and want to append 4:
    (1,2,3,4) instead of ((1,2,3),4)

    I wanted to use it as a return value of a function and an assignment, but:

    (a,b,c),d = myfunc()

    doesn't look nice to me. I intended to have

    a,b,c,d = myfunc()

    Thanks for any suggestions.
    Ciao
    Uwe
    --

    Tags: None
    • Erik Max Francis
      #2
      Re: adding elements to python tuples

      Uwe Mayer wrote:
      [color=blue]
      > is it possible to append new elements to a tuple? I know tuples are
      > immutable and that this would mean to create a new tuple with one more
      > element, but how do you do it?[/color]

      Just use the + operator:
      [color=blue][color=green][color=darkred]
      >>> a = (1, 2, 3)
      >>> a + (4,)[/color][/color][/color]
      (1, 2, 3, 4)[color=blue][color=green][color=darkred]
      >>> a[/color][/color][/color]
      (1, 2, 3)[color=blue][color=green][color=darkred]
      >>> a += (4, 5)
      >>> a[/color][/color][/color]
      (1, 2, 3, 4, 5)

      --
      __ Erik Max Francis && max@alcyone.com && http://www.alcyone.com/max/
      / \ San Jose, CA, USA && 37 20 N 121 53 W && &tSftDotIotE
      \__/ Here day fights with night.
      -- (the last words of Victor Hugo)

        Comment

        • duikboot
          #3
          Re: adding elements to python tuples

          Maybe you could use this?
          [color=blue][color=green][color=darkred]
          >>> d=(1,2,3,4)
          >>> e=5,
          >>> d=d+e
          >>> d[/color][/color][/color]
          (1, 2, 3, 4, 5)


          Regards,

          Arjen


          "Uwe Mayer" <merkosh@hadiko .de> schreef in bericht
          news:bugels$6u$ 1@news.rz.uni-karlsruhe.de...[color=blue]
          > Hi,
          >
          > is it possible to append new elements to a tuple? I know tuples are
          > immutable and that this would mean to create a new tuple with one more
          > element, but how do you do it?
          >
          > i.e. i have (1,2,3) and want to append 4:
          > (1,2,3,4) instead of ((1,2,3),4)
          >
          > I wanted to use it as a return value of a function and an assignment, but:
          >
          > (a,b,c),d = myfunc()
          >
          > doesn't look nice to me. I intended to have
          >
          > a,b,c,d = myfunc()
          >
          > Thanks for any suggestions.
          > Ciao
          > Uwe
          > --
          >[/color]


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