I am trying to write a Suduoku game. Every time I use a number, I need to delete it from the list.
I have already tried .pop[1], but it did nothing when the number was one.
import random rownum1 = ["1","2","3","4","5","6","7","8","9"] print(random.choice(rownum1)) if random.choice(rownum1) == "1": del rownum1[0] print(rownum1) If one is randomly selected I expect the output to be:
["2","3","4","5","6","7","8","9"] But nothing is happening when one is randomly chose.
You are choosing a random string, printing it, then choosing another string and compare it to "1"!
Each time you call random.choice(rownum1), you will get a new random string. The correct way to do what you want is to store the random string in a variable:
import random rownum1 = ["1","2","3","4","5","6","7","8","9"] num = random.choice(rownum1) # <- store the value in a variable for later reuse print(num) if num == "1": del rownum1[0] print(rownum1) The problem with doing .pop[1] on your particular list is that the items in your list are strings, whereas 1 is an integer. Thus, you must do .pop("1") to remove the "1" from your list.
list.pop() (note the parantheses) takes as input an index to delete, it is not like list.remove()