Re: HELP PLEASE printing single characters!

[Larry Hudson via Python-list]

On 12/02/2015 04:08 PM, John Strick wrote:

On Wednesday, December 2, 2015 at 12:58:30 PM UTC-6, Dylan Riley wrote:

hi all,
I have been trying to figure out all day why my code is printing single 
characters from my list when i print random elements using random.choice the 
elements in the list are not single characters for example when i print, 
print(LIST[random.choice]) i get:
["e", "x", "a", "m", "p", "l", "e"] when i should get ["example"].

my code is:
#Create a program that prints a list of words in random order.
#The program should print all the words and not repeat any.

import random

LIST = ["blue ", "red ", "yellow ", "green ", "orange "]
order = []

print("This game will print a random order of colours")
print("The list is", LIST)
input("press enter to start")



while LIST != []:
 choice = random.choice(LIST)
 order += choice
 while choice in LIST:
 LIST.remove(choice)
print(order)



input("press enter to exit")

thanks in advance guys


You could just shuffle the list first, then loop through it. This will 
guarantee that each color is only used once.


Not quite.  Only if the original list has no repetitions.

My personal approach would be to use a set to eliminate the duplicates, convert back to a list 
and shuffle that.


no_reps = list(set(LIST))
random.shuffle(no_reps)
print(no_reps)   #  Or use loop to print one-per-line

 -=- Larry -=-

--
https://mail.python.org/mailman/listinfo/python-list

Re: HELP PLEASE printing single characters!

[Ian Kelly]

On Wed, Dec 2, 2015 at 1:44 PM, Dylan Riley  wrote:
> hi ian what would be the correct code to use in this situation then because 
> as far as i am aware the elements of my list should be printed as whole 
> elements and not just characters of the elements.

order.append(choice)
-- 
https://mail.python.org/mailman/listinfo/python-list

Re: HELP PLEASE printing single characters!

[Ian Kelly]

On Wed, Dec 2, 2015 at 12:58 PM, Dylan Riley  wrote:
> hi all,
> I have been trying to figure out all day why my code is printing single 
> characters from my list when i print random elements using random.choice the 
> elements in the list are not single characters for example when i print, 
> print(LIST[random.choice]) i get:
> ["e", "x", "a", "m", "p", "l", "e"] when i should get ["example"].

Remember that strings are iterable, and that iterating over strings
results in individual characters. That should give you a clue as to
what's going on.

> my code is:
> #Create a program that prints a list of words in random order.
> #The program should print all the words and not repeat any.
>
> import random
>
> LIST = ["blue ", "red ", "yellow ", "green ", "orange "]
> order = []
>
> print("This game will print a random order of colours")
> print("The list is", LIST)
> input("press enter to start")
>
>
>
> while LIST != []:
> choice = random.choice(LIST)
> order += choice

Addition on a list does concatenation, not appending. So this takes
each element from choice and adds them individually to order.
-- 
https://mail.python.org/mailman/listinfo/python-list

HELP PLEASE printing single characters!

[Dylan Riley]

hi all,
I have been trying to figure out all day why my code is printing single 
characters from my list when i print random elements using random.choice the 
elements in the list are not single characters for example when i print, 
print(LIST[random.choice]) i get:
["e", "x", "a", "m", "p", "l", "e"] when i should get ["example"].

my code is:
#Create a program that prints a list of words in random order.
#The program should print all the words and not repeat any.

import random

LIST = ["blue ", "red ", "yellow ", "green ", "orange "]
order = []

print("This game will print a random order of colours")
print("The list is", LIST)
input("press enter to start")



while LIST != []:
choice = random.choice(LIST)
order += choice
while choice in LIST:
LIST.remove(choice)
print(order)



input("press enter to exit")

thanks in advance guys
-- 
https://mail.python.org/mailman/listinfo/python-list

Re: HELP PLEASE printing single characters!

[Dylan Riley]

On Wednesday, December 2, 2015 at 7:09:23 PM UTC, Ian wrote:
> On Wed, Dec 2, 2015 at 12:58 PM, Dylan Riley  wrote:
> > hi all,
> > I have been trying to figure out all day why my code is printing single 
> > characters from my list when i print random elements using random.choice 
> > the elements in the list are not single characters for example when i 
> > print, print(LIST[random.choice]) i get:
> > ["e", "x", "a", "m", "p", "l", "e"] when i should get ["example"].
> 
> Remember that strings are iterable, and that iterating over strings
> results in individual characters. That should give you a clue as to
> what's going on.
> 
> > my code is:
> > #Create a program that prints a list of words in random order.
> > #The program should print all the words and not repeat any.
> >
> > import random
> >
> > LIST = ["blue ", "red ", "yellow ", "green ", "orange "]
> > order = []
> >
> > print("This game will print a random order of colours")
> > print("The list is", LIST)
> > input("press enter to start")
> >
> >
> >
> > while LIST != []:
> > choice = random.choice(LIST)
> > order += choice
> 
> Addition on a list does concatenation, not appending. So this takes
> each element from choice and adds them individually to order.

hi ian what would be the correct code to use in this situation then because as 
far as i am aware the elements of my list should be printed as whole elements 
and not just characters of the elements.
-- 
https://mail.python.org/mailman/listinfo/python-list

Re: HELP PLEASE printing single characters!

[John Strick]

On Wednesday, December 2, 2015 at 12:58:30 PM UTC-6, Dylan Riley wrote:
> hi all,
> I have been trying to figure out all day why my code is printing single 
> characters from my list when i print random elements using random.choice the 
> elements in the list are not single characters for example when i print, 
> print(LIST[random.choice]) i get:
> ["e", "x", "a", "m", "p", "l", "e"] when i should get ["example"].
> 
> my code is:
> #Create a program that prints a list of words in random order.
> #The program should print all the words and not repeat any.
> 
> import random
> 
> LIST = ["blue ", "red ", "yellow ", "green ", "orange "]
> order = []
> 
> print("This game will print a random order of colours")
> print("The list is", LIST)
> input("press enter to start")
> 
> 
> 
> while LIST != []:
> choice = random.choice(LIST)
> order += choice
> while choice in LIST:
> LIST.remove(choice)
> print(order)
> 
> 
> 
> input("press enter to exit")
> 
> thanks in advance guys

You could just shuffle the list first, then loop through it. This will 
guarantee that each color is only used once. 

import random
LIST = ["blue ", "red ", "yellow ", "green ", "orange "]
random.shuffle(LIST)
for color in LIST:
print(color)
# or add to order or whatever you need to

   
-- 
https://mail.python.org/mailman/listinfo/python-list