diff options
Diffstat (limited to 'Doc/lib/librunpy.tex')
| -rw-r--r-- | Doc/lib/librunpy.tex | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/Doc/lib/librunpy.tex b/Doc/lib/librunpy.tex index c7a7e51..0bcfad2 100644 --- a/Doc/lib/librunpy.tex +++ b/Doc/lib/librunpy.tex @@ -35,16 +35,19 @@ The supplied dictionary will not be modified. If any of the special global variables below are defined in the supplied dictionary, those definitions are overridden by the \code{run_module} function. -The special global variables \code{__name__}, \code{__file__}, -\code{__loader__} and \code{__builtins__} are set in the globals -dictionary before the module code is executed. +The special global variables \code{__name__}, \code{__module_name__}, +\code{__file__}, \code{__loader__} and \code{__builtins__} are +set in the globals dictionary before the module code is executed. \code{__name__} is set to \var{run_name} if this optional argument is supplied, and the \var{mod_name} argument otherwise. +\code{__module_name__} is always set to \var{mod_name} (this allows +modules to use imports relative to their package name). + \code{__loader__} is set to the PEP 302 module loader used to retrieve -the code for the module (This loader may be a wrapper around the -standard import mechanism). +the code for the module (This will not be defined if the module was +found using the standard import mechanism). \code{__file__} is set to the name provided by the module loader. If the loader does not make filename information available, this @@ -55,10 +58,12 @@ the top level namespace of the \module{__builtin__} module. If the argument \var{alter_sys} is supplied and evaluates to \code{True}, then \code{sys.argv[0]} is updated with the value of -\code{__file__} and \code{sys.modules[__name__]} is updated with a +\code{__file__} and \code{sys.modules[mod_name]} is updated with a temporary module object for the module being executed. Both -\code{sys.argv[0]} and \code{sys.modules[__name__]} are restored to -their original values before the function returns. +\code{sys.argv[0]} and \code{sys.modules[mod_name]} are restored to +their original values before the function returns. If \var{run_name} +differs from \var{mod_name} entries are made in \code{sys.modules} +for both names. Note that this manipulation of \module{sys} is not thread-safe. Other threads may see the partially initialised module, as well as the |