bpo-38872: Document exec symbol for codeop.compile_command (pythonGH-…

…20047)

* Document exec symbol for codeop.compile_command

* Remove extra statements

Co-authored-by: nanjekyejoannah <joannah.nanjekye@ibm.com>
(cherry picked from commit 7ba1f75)

Co-authored-by: Joannah Nanjekye <33177550+nanjekyejoannah@users.noreply.github.com>

Doc/library/code.rst

@@ -56,8 +56,8 @@ build applications which provide an interactive interpreter prompt.
 
  *source* is the source string; *filename* is the optional filename from which
  source was read, defaulting to ``'<input>'``; and *symbol* is the optional
- grammar start symbol, which should be either ``'single'`` (the default) or
- ``'eval'``.
+ grammar start symbol, which should be ``'single'`` (the default), ``'eval'``
+ or ``'exec'``.
 
  Returns a code object (the same as ``compile(source, filename, symbol)``) if the
  command is complete and valid; ``None`` if the command is incomplete; raises

Doc/library/codeop.rst

@@ -43,8 +43,9 @@ To do just the former:
  :exc:`OverflowError` or :exc:`ValueError` if there is an invalid literal.
 
  The *symbol* argument determines whether *source* is compiled as a statement
- (``'single'``, the default) or as an :term:`expression` (``'eval'``). Any
- other value will cause :exc:`ValueError` to be raised.
+ (``'single'``, the default), as a sequence of statements (``'exec'``) or
+ as an :term:`expression` (``'eval'``). Any other value will
+ cause :exc:`ValueError` to be raised.
 
  .. note::
 

Lib/codeop.py

@@ -112,7 +112,8 @@ def compile_command(source, filename="<input>", symbol="single"):
  source -- the source string; may contain \n characters
  filename -- optional filename from which source was read; default
  "<input>"
- symbol -- optional grammar start symbol; "single" (default) or "eval"
+ symbol -- optional grammar start symbol; "single" (default), "exec"
+ or "eval"
 
  Return value / exceptions raised: