Changes between Version 13 and Version 14 of NewbieMistakes

Timestamp:

Dec 23, 2005, 11:45:00 AM (18 years ago)

Author:

scum

Comment:

added detail on how python treats (x) and (x,). Added bracket hint.

NewbieMistakes

@@ -107 +107 @@
 }}}
 
-It's a standard python error - you are just missing a comma in the list_display assignement like this:
+You are just missing a comma in the list_display assignement like this:
 
 {{{
@@ -119 +119 @@
 }}}
 
-Since a tuple is expected but a string provided, the code will merrily iterate over the characters of the string instead of the tuple elements - and that's where the single-char attribute names come from.
+Remember, in python:
+{{{
+#!python
+>>> a = (1) ## This causes problems
+1
+>>> a = (1,) ## These are fine.
+(1,)
+>>> a = [1]
+[1]
+>>> a = [1,]
+[1]
+}}}
+
+Since a tuple is expected but a string provided, the code will merrily iterate over the characters of the string instead of the tuple elements - and that's where the single-char attribute names come from. If the commas are consistently causing you problems, try using brackets [] instead of parentheses.