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1. Ekaitz Zárraga 👹 (ekaitz_zarraga@mastodon.social)'s status on Saturday, 08-Sep-2018 12:10:26 UTC Ekaitz Zárraga 👹

   • jartigag

   @jartigag No.
   Integers are Immutable.

   With:
   b += 1
   you are doing:
   b = 2 + 1
   This is creating a new reference.

   The trick here you need to remember is the = in python doesn't work as in other languages. The = creates a new reference and binds it to the name in the left. So you are creating a reference to the result of 2+1, which is 3.
   So: b = 3 is removing the previous reference to a[1] and changing it to a 3 in the memory.

   Remember this!

   PS: Same happens with tuples they are Immutable.

   • jartigag repeated this.
   • jartigag (jartigag@mastodon.social)'s status on Saturday, 08-Sep-2018 13:37:17 UTC jartigag

     in reply to

     @ekaitz_zarraga so in this case the try-except TypeError isn't so wrong, is it? because i want to make a copy if the var is a list or an string, and make a reference to immutable values if the var is an int or a boolean.
     would you do it in a better way, though?