Document bytes.translate().

BTW, having str.maketrans() as a static method and
string.maketrans() as a function that creates translation tables for bytes objects is not very consistent :)
This commit is contained in:
Georg Brandl 2008-12-27 23:33:20 +00:00
parent 09923f3b45
commit 454636f027
1 changed files with 16 additions and 17 deletions

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@ -1120,9 +1120,8 @@ functions based on regular expressions.
ordinals, strings or ``None``. Unmapped characters are left untouched.
Characters mapped to ``None`` are deleted.
You can use :meth:`str.maketrans` to create a translation table. For string
objects, set the *table* argument to ``None`` for translations that only
delete characters:
You can use :meth:`str.maketrans` to create a translation map from
character-to-character mappings in different formats.
.. note::
@ -1525,23 +1524,23 @@ The bytes and bytearray types have an additional class method:
>>> bytes.fromhex('f0 f1f2 ')
b'\xf0\xf1\xf2'
.. XXX verify/document translate() semantics!
The translate method differs in semantics from the version available on strings:
.. method:: bytes.translate(table[, delete])
Return a copy of the bytes object where all bytes occurring in the optional
argument *delete* are removed, and the remaining bytes have been mapped
through the given translation table, which must be a bytes object of length
256.
Return a copy of the bytes or bytearray object where all bytes occurring in
the optional argument *delete* are removed, and the remaining bytes have been
mapped through the given translation table, which must be a bytes object of
length 256.
You can use the :func:`maketrans` helper function in the :mod:`string` module to
create a translation table.
You can use the :func:`string.maketrans` helper function to create a
translation table.
.. XXX a None table doesn't seem to be supported
Set the *table* argument to ``None`` for translations that only delete characters::
Set the *table* argument to ``None`` for translations that only delete
characters::
>>> 'read this short text'.translate(None, 'aeiou')
'rd ths shrt txt'
>>> b'read this short text'.translate(None, b'aeiou')
b'rd ths shrt txt'
.. _types-set: