Change standalone programs to interactive sessions

1 files changed, 13 insertions, 8 deletions

diff --git a/bot/resources/tags/mutability.md b/bot/resources/tags/mutability.md
index b37420fc7..8b98da43a 100644
--- a/bot/resources/tags/mutability.md
+++ b/bot/resources/tags/mutability.md
@@ -4,9 +4,11 @@ Imagine that you want to make all letters in a string upper case. Conveniently,
 
 You might think that this would work:
 ```python
-string = "abcd"
-string.upper()
-print(string) # abcd
+>>> string = "abcd"
+>>> string.upper()
+'ABCD'
+>>> string
+'abcd'
 ```
 
 `string` didn't change. Why is that so?
@@ -14,8 +16,10 @@ print(string) # abcd
 That's because strings in Python are _immutable_. You can't change them, you can only pass around existing strings or create new ones.
 
 ```python
-string = "abcd"
-string = string.upper()
+>>> string = "abcd"
+>>> string = string.upper()
+>>> string
+'ABCD'
 ```
 
 `string.upper()` creates and returns a new string which is like the old one, but with all the letters turned to upper case.
@@ -24,9 +28,10 @@ string = string.upper()
 
 Mutable data types like `list`, on the other hand, can be changed in-place:
 ```python
-my_list = [1, 2, 3]
-my_list.append(4)
-print(my_list) # [1, 2, 3, 4]
+>>> my_list = [1, 2, 3]
+>>> my_list.append(4)
+>>> my_list
+[1, 2, 3, 4]
 ```
 
 Other examples of mutable data types in Python are `dict` and `set`.