Python adding an integer to a list

Question

I am trying to add 1 to my variable and then add this variable to a list so when I print out my list, the value of the variable is within it. However, my code prints out an empty list despite me adding the variable to it.

case_number = 0
case_numbers = []

issue = input('Has the issue been solved?').lower()
if issue == 'no':
      case_number += 1
      case_numbers+[int(case_number)]
      print(case_numbers)

Answer 1

If you want to add a value to a growing list you need to use list.append() method. It adds the value to the end of the list, so you code should be:

case_number = 0
case_numbers = []

issue = input('Has the issue been solved?').lower()
if issue == 'no':
      case_number += 1
      case_numbers.append(int(case_number))
      print(case_numbers)

Extra tip: list.append() method adds value to end of list so if you add the list B into list A using append() then it will add the listB inside the listA like this listA.append(listB)= ["a","b","c",["d","e","f"]] so if you want to add the values as normal list you should use list.extend() method which will add the values of one list to another such that listA.extend(listB)=["a","b","c","d","e","f"]