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-rw-r--r--Doc/library/os.rst15
1 files changed, 8 insertions, 7 deletions
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 3bfefc6..8092397 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -170,9 +170,10 @@ process and user.
.. data:: environ
- A :term:`mapping` object representing the string environment. For example,
- ``environ['HOME']`` is the pathname of your home directory (on some platforms),
- and is equivalent to ``getenv("HOME")`` in C.
+ A :term:`mapping` object where keys and values are strings that represent
+ the process environment. For example, ``environ['HOME']`` is the pathname
+ of your home directory (on some platforms), and is equivalent to
+ ``getenv("HOME")`` in C.
This mapping is captured the first time the :mod:`os` module is imported,
typically during Python startup as part of processing :file:`site.py`. Changes
@@ -209,10 +210,10 @@ process and user.
.. data:: environb
- Bytes version of :data:`environ`: a :term:`mapping` object representing the
- environment as byte strings. :data:`environ` and :data:`environb` are
- synchronized (modify :data:`environb` updates :data:`environ`, and vice
- versa).
+ Bytes version of :data:`environ`: a :term:`mapping` object where both keys
+ and values are :class:`bytes` objects representing the process environment.
+ :data:`environ` and :data:`environb` are synchronized (modifying
+ :data:`environb` updates :data:`environ`, and vice versa).
:data:`environb` is only available if :data:`supports_bytes_environ` is
``True``.