[docs] [issue19060] docs: note that subprocess doesn't replace os.exec*

[anatoly techtonik]

New submission from anatoly techtonik:

I always thought that subprocess is replacing all other methods of executing external programs from Python and it is a preferred way. Perhaps I was not attentive that people isolate:
  os.system
  os.spawn*
  os.popen*
and
  os.exec*

While subprocess replaces three first, it doesn't do this with the last one. The documentation should mention this in the header block. Proposed edit:

  ...
  replace several other, older modules and functions, such as:

     os.system
     os.spawn*
     os.popen*
     popen2.*
     commands.*

+ Note that it doesn't replace other ways of executing external
+ processes from Python, such as:
+
+    os.exec*

  Information about how the subprocess module can be used
  ...

----------
assignee: docs at python
components: Documentation
messages: 198188
nosy: docs at python, techtonik
priority: normal
severity: normal
status: open
title: docs: note that subprocess doesn't replace os.exec*
versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19060>
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