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Diffstat (limited to 'doc/python3.rst')
| -rw-r--r-- | doc/python3.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/python3.rst b/doc/python3.rst index b339e0a98b0..4506fb9d9f1 100644 --- a/doc/python3.rst +++ b/doc/python3.rst @@ -109,3 +109,23 @@ Removed/renamed methods ``in`` for dicts was introduced in Python 2.3, leading to ``has_key`` being redundant, and removed in Python 3. + +Minor syntax changes +-------------------- + +* the ability to unpack a parameter (in the parameter declaration list) has + been removed in Python 3 e.g.:: + + def foo((bar, baz), qux): + … + + is now invalid + +* octal literals must be prefixed by ``0o`` (or ``0O``). Following the C + family, in Python 2 an octal literal simply has a leading 0, which can be + confusing and easy to get wrong when e.g. padding for readability (e.g. + ``0013`` would be the decimal 11 rather than 13). + + In Python 3, leading zeroes followed by neither a 0 nor a period is an + error, octal literals now follow the hexadecimal convention with a ``0o`` + prefix. |