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tests/cpydiff: Document that uPy requires space after number+period.

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Signed-off-by: Jeff Epler <jepler@gmail.com>
This commit is contained in:
Jeff Epler
2025-05-09 21:22:33 +02:00
committed by Damien George
parent e22c666d06
commit 2f97d1dd28
1 changed files with 6 additions and 2 deletions
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8
tests/cpydiff/syntax_spaces.py
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@@ -1,11 +1,11 @@
"""
categories: Syntax,Spaces
description: MicroPython requires spaces between literal numbers and keywords, CPython doesn't
description: MicroPython requires spaces between literal numbers and keywords or ".", CPython doesn't
cause: Different parser implementation
MicroPython's tokenizer treats a sequence like ``1and`` as a single token, while CPython treats it as two tokens.
Since CPython 3.11, this syntax causes a ``SyntaxWarning`` for an "invalid literal".
Since CPython 3.11, when the literal number is followed by a token, this syntax causes a ``SyntaxWarning`` for an "invalid literal". When a literal number is followed by a "." denoting attribute access, CPython does not warn.
workaround: Add a space between the integer literal and the intended next token.
@@ -24,3 +24,7 @@ try:
print(eval("1if 1else 0"))
except SyntaxError:
print("Should have worked")
try:
print(eval("0x1.to_bytes(1)"))
except SyntaxError:
print("Should have worked")