Do nothing if the pipe is already closed. _loop_writing() may call
_force_close() when it gets ConnectionResetError.

Tulip (changeset d7ac90c0463a)

Process.subprocess read-only property

The '**' operator is available only since 8.5 and in any case such large
integers are not supported on Tcl <8.5.

The '**' operator is available only since 8.5 and in any case such large
integers are not supported on Tcl <8.5.

Issue #20426: When passing the re.DEBUG flag, re.compile() displays the debug output every time it is called, regardless of the compilation cache.

Issue #20426: When passing the re.DEBUG flag, re.compile() displays the debug output every time it is called, regardless of the compilation cache.

Improved error handling in variables-related commands.

Improved error handling in variables-related commands.

exprlong() and exprboolean().

exprlong() and exprboolean().

requires at least Mac OS X 10.6.