tests/cpydiff: Add CPy diff test for assignment expression behaviour.

2020-06-16 21:42:52 +10:00 · 2020-06-16 21:42:52 +10:00 · a3c89cf907
parent e0fe8ea644
commit a3c89cf907
1 changed files with 7 additions and 0 deletions
--- a/tests/cpydiff/syntax_assign_expr.py
+++ b/tests/cpydiff/syntax_assign_expr.py
@ -0,0 +1,7 @@
+"""
+categories: Syntax,Operators
+description: MicroPython allows using := to assign to the variable of a comprehension, CPython raises a SyntaxError.
+cause: MicroPython is optimised for code size and doesn't check this case.
+workaround: Do not rely on this behaviour if writing CPython compatible code.
+"""
+print([i := -1 for i in range(4)])