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Python lists

Lists is a sequence and a basic data structure.   A list may contain strings (text) and numbers.  A list is similar to an array in other programming languages, but has additional functionality.

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Python List


We define lists with brackets []. To access the data, these same brackets are used.
Example list usage:

#!/usr/bin/python

l = [ "Drake", "Derp", "Derek", "Dominique" ]

print(l) # prints all elements
print(l[0]) # print first element
print(l[1]) # prints second element

Add/remove


We can use the functions append() and remove() to manipulate the list.

#!/usr/bin/python

l = [ "Drake", "Derp", "Derek", "Dominique" ]

print(l) # prints all elements
l.append("Victoria") # add element.
print(l) # print all elements
l.remove("Derp") # remove element.
l.remove("Drake") # remove element.
print(l) # print all elements.

Sort list


We can sort the list using the sort() function.

#!/usr/bin/python

l = [ "Drake", "Derp", "Derek", "Dominique" ]

print(l) # prints all elements
l.sort() # sorts the list in alphabetical order
print(l) # prints all elements

If you want to have the list in descending order, simply use the reverse() function.

#!/usr/bin/python

l = [ "Drake", "Derp", "Derek", "Dominique" ]

print(l) # prints all elements
l.sort() # sorts the list in alphabetical order
l.reverse() # reverse order.
print(l) # prints all elements

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34 thoughts on “Python lists


  1. Articfox879 Gaming
    - August 12, 2017

    Just so you know the character before the = sign, is a L (lowercase), I spent 3 days before realizing this, so just helping some beginners out

  2. Ayesha
    - January 16, 2016

    How can i print the items in the list randomly

    1. Frank
      - January 24, 2016

      You can use the random.shuffle() method:

      #!/usr/bin/python
      import random
       list = [ "Drake", "Derp", "Derek", "Dominique" ]
      random.shuffle(list)
      print(list)

  3. José Chumán
    - December 8, 2015

    Is there any way to print like this without using any loop? I’m using Python 3.x

    l = [ “Drake”, “Derp”, “Derek”, “Dominique” ]
    Output:DrakeDerpDerekDominique
    1. Frank
      - December 8, 2015

      Loops are preferred but yes, you can print them one by one:

      l = ["Drake","Derp","Derek","Dominique"]
      print(l[0])
      print(l[1])
      print(l[2])
      print(l[3])

      There is another method, but loops would create the cleanest code.

  4. Mike
    - September 1, 2015
    #!/usr/bin/python
     l = [ "Drake", "Derp", "Derek", "Dominique" ]
     print l # prints all elements
    print l[0] # print first element
    print l[1] # prints second element

    Output:
    if when i try print l[0] and it doesnt work is it because im using python 3>?

    1. Frank
      - September 2, 2015

      Yes. Use print(l[0]) for Python 3.x

    2. Johnkw
      - September 10, 2015

      i dont think its because of the python version..im using python 3 and its working very well even vat that part

    3. Lei
      - November 24, 2015

      pyhton 2.7.10 is ok

  5. Mike
    - September 1, 2015

    hey having issues with this part

    #!/usr/bin/python
     l = [ "Drake", "Derp", "Derek", "Dominique" ]
     print l # prints all elements
    print l[0] # print first element
    print l[1] # prints second element
    Output: on the print l[0]

    im on python 3 i know nothing about this im just here trying to learn any help is apreciated

    1. Frank
      - September 1, 2015

      Hi Mike,

      In Python 3.x the brackets are required:

      #!/usr/bin/python3
       l = [ "Drake", "Derp", "Derek", "Dominique" ]
       print(l) # prints all elements
      print(l[0]) # print first element
      print(l[1]) # prints second element

      1. Mike
        - September 1, 2015

        thank you sir , if im a beginner and am going thru tutorials would you recommend i download the other version ?

        1. Frank
          - September 1, 2015

          Hi Mike,
          If you use brackets you can use Python 3.x.
          All of them should work

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