datetime escapes the sandbox. The Windows build is all set. I leave it

to others to argue about how to build it on other platforms (on Windows
it's in its own DLL).

Include/datetime.h

+/*  datetime.h
+ */
+
+#ifndef DATETIME_H
+#define DATETIME_H
+
+/* Fields are packed into successive bytes, each viewed as unsigned and
+ * big-endian, unless otherwise noted:
+ *
+ * byte offset
+ *  0 		year     2 bytes, 1-9999
+ *  2		month    1 byte, 1-12
+ *  3 		day      1 byte, 1-31
+ *  4		hour     1 byte, 0-23
+ *  5 		minute   1 byte, 0-59
+ *  6 		second   1 byte, 0-59
+ *  7 		usecond  3 bytes, 0-999999
+ * 10
+ */
+
+/* # of bytes for year, month, and day. */
+#define _PyDateTime_DATE_DATASIZE 4
+
+/* # of bytes for hour, minute, second, and usecond. */
+#define _PyDateTime_TIME_DATASIZE 6
+
+/* # of bytes for year, month, day, hour, minute, second, and usecond. */
+#define _PyDateTime_DATETIME_DATASIZE 10
+
+typedef struct
+{
+	PyObject_HEAD
+	long hashcode;
+	unsigned char data[_PyDateTime_DATE_DATASIZE];
+} PyDateTime_Date;
+
+typedef struct
+{
+	PyObject_HEAD
+	long hashcode;
+	unsigned char data[_PyDateTime_DATETIME_DATASIZE];
+} PyDateTime_DateTime;
+
+typedef struct
+{
+	PyObject_HEAD
+	long hashcode;
+	unsigned char data[_PyDateTime_DATETIME_DATASIZE];
+	PyObject *tzinfo;
+} PyDateTime_DateTimeTZ;
+
+typedef struct
+{
+	PyObject_HEAD
+	long hashcode;
+	unsigned char data[_PyDateTime_TIME_DATASIZE];
+} PyDateTime_Time;
+
+typedef struct
+{
+	PyObject_HEAD
+	long hashcode;
+	unsigned char data[_PyDateTime_TIME_DATASIZE];
+	PyObject *tzinfo;
+} PyDateTime_TimeTZ;
+
+typedef struct
+{
+	PyObject_HEAD
+	long hashcode;		/* -1 when unknown */
+	int days;		/* -MAX_DELTA_DAYS <= days <= MAX_DELTA_DAYS */
+	int seconds;		/* 0 <= seconds < 24*3600 is invariant */
+	int microseconds;	/* 0 <= microseconds < 1000000 is invariant */
+} PyDateTime_Delta;
+
+typedef struct
+{
+	PyObject_HEAD		/* a pure abstract base clase */
+} PyDateTime_TZInfo;
+
+/* Apply for date, datetime, and datetimetz instances. */
+#define PyDateTime_GET_YEAR(o)     ((((PyDateTime_Date*)o)->data[0] << 8) | \
+                                     ((PyDateTime_Date*)o)->data[1])
+#define PyDateTime_GET_MONTH(o)    (((PyDateTime_Date*)o)->data[2])
+#define PyDateTime_GET_DAY(o)      (((PyDateTime_Date*)o)->data[3])
+
+#define PyDateTime_DATE_GET_HOUR(o)        (((PyDateTime_DateTime*)o)->data[4])
+#define PyDateTime_DATE_GET_MINUTE(o)      (((PyDateTime_DateTime*)o)->data[5])
+#define PyDateTime_DATE_GET_SECOND(o)      (((PyDateTime_DateTime*)o)->data[6])
+#define PyDateTime_DATE_GET_MICROSECOND(o) 		\
+	((((PyDateTime_DateTime*)o)->data[7] << 16) |	\
+         (((PyDateTime_DateTime*)o)->data[8] << 8)  |	\
+          ((PyDateTime_DateTime*)o)->data[9])
+
+/* Apply for time and timetz instances. */
+#define PyDateTime_TIME_GET_HOUR(o)        (((PyDateTime_Time*)o)->data[0])
+#define PyDateTime_TIME_GET_MINUTE(o)      (((PyDateTime_Time*)o)->data[1])
+#define PyDateTime_TIME_GET_SECOND(o)      (((PyDateTime_Time*)o)->data[2])
+#define PyDateTime_TIME_GET_MICROSECOND(o) 		\
+	((((PyDateTime_Time*)o)->data[3] << 16) |	\
+         (((PyDateTime_Time*)o)->data[4] << 8)  |	\
+          ((PyDateTime_Time*)o)->data[5])
+
+#define PyDate_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateType)
+#define PyDate_CheckExact(op) ((op)->ob_type == &PyDateTime_DateType)
+
+#define PyDateTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateTimeType)
+#define PyDateTime_CheckExact(op) ((op)->ob_type == &PyDateTime_DateTimeType)
+
+#define PyDateTimeTZ_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateTimeTZType)
+#define PyDateTimeTZ_CheckExact(op) ((op)->ob_type == &PyDateTime_DateTimeTZType)
+
+#define PyTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeType)
+#define PyTime_CheckExact(op) ((op)->ob_type == &PyDateTime_TimeType)
+
+#define PyTimeTZ_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeTZType)
+#define PyTimeTZ_CheckExact(op) ((op)->ob_type == &PyDateTime_TimeTZType)
+
+#define PyDelta_Check(op) PyObject_TypeCheck(op, &PyDateTime_DeltaType)
+#define PyDelta_CheckExact(op) ((op)->ob_type == &PyDateTime_DeltaType)
+
+#define PyTZInfo_Check(op) PyObject_TypeCheck(op, &PyDateTime_TZInfoType)
+#define PyTZInfo_CheckExact(op) ((op)->ob_type == &PyDateTime_TZInfoType)
+
+#endif

PC/dllbase_nt.txt

@@ -5,7 +5,7 @@ is selected, and the DLL subject to fixups.  Apparently, these
 fixups are very slow, and significant performance gains can be
 made by selecting a good base address.
 
-This document is to allocate base addresses to core Python 
+This document is to allocate base addresses to core Python
 and Python .PYD files, to give a better change of optimal performance.
 This base address is passed to the linker using the /BASE
 command line switch.
@@ -31,6 +31,7 @@ More standard extensions 1D100000 - 1e000000
  - unicodedata               1D120000 - 1D160000
  - winsound                  1D160000 - 1D170000
  - bZ2                       1D170000 - 1D180000
+ - datetime                  1D180000 - 1D190000
 
 Other extension modules
  - win32api                  1e200000 - 1e220000

PCbuild/datetime.dsp

+# Microsoft Developer Studio Project File - Name="datetime" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+
+CFG=datetime - Win32 Debug
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "datetime.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "datetime.mak" CFG="datetime - Win32 Debug"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "datetime - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "datetime - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName "datetime"
+# PROP Scc_LocalPath ".."
+CPP=cl.exe
+MTL=midl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "datetime - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir "Release"
+# PROP BASE Intermediate_Dir "Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "."
+# PROP Intermediate_Dir "x86-temp-release\datetime"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+F90=df.exe
+# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /Zi /O2 /I "..\Include" /I "..\PC" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /YX /FD /c
+# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32
+# ADD BASE RSC /l 0x409 /d "NDEBUG"
+# ADD RSC /l 0x409 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386
+# ADD LINK32 user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib wsock32.lib /nologo /base:"0x1D180000" /subsystem:windows /dll /debug /machine:I386 /nodefaultlib:"libc" /out:"./datetime.pyd"
+# SUBTRACT LINK32 /pdb:none
+
+!ELSEIF  "$(CFG)" == "datetime - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "."
+# PROP Intermediate_Dir "x86-temp-debug\datetime"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+F90=df.exe
+# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /I "..\Include" /I "..\PC" /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /YX /FD /c
+# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32
+# ADD BASE RSC /l 0x409 /d "_DEBUG"
+# ADD RSC /l 0x409 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 user32.lib kernel32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib wsock32.lib /nologo /base:"0x1D180000" /subsystem:windows /dll /debug /machine:I386 /nodefaultlib:"libc" /nodefaultlib:"msvcrt" /out:"./datetime_d.pyd" /pdbtype:sept
+# SUBTRACT LINK32 /pdb:none
+
+!ENDIF 
+
+# Begin Target
+
+# Name "datetime - Win32 Release"
+# Name "datetime - Win32 Debug"
+# Begin Source File
+
+SOURCE=..\Modules\datetimemodule.c
+# End Source File
+# End Target
+# End Project

PCbuild/pcbuild.dsw

@@ -129,6 +129,21 @@ Package=<4>
 
 ###############################################################################
 
+Project: "datetime"=.\datetime.dsp - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+    Begin Project Dependency
+    Project_Dep_Name pythoncore
+    End Project Dependency
+}}}
+
+###############################################################################
+
 Project: "mmap"=.\mmap.dsp - Package Owner=<4>
 
 Package=<5>

PCbuild/python20.wse

@@ -1739,6 +1739,11 @@ item: Install File
   Destination=%MAINDIR%\DLLs\bz2.pyd
   Flags=0000000000000010
 end
+item: Install File
+  Source=.\datetime.pyd
+  Destination=%MAINDIR%\DLLs\datetime.pyd
+  Flags=0000000000000010
+end
 item: Install File
   Source=.\mmap.pyd
   Destination=%MAINDIR%\DLLs\mmap.pyd
@@ -1826,6 +1831,11 @@ item: Install File
   Destination=%MAINDIR%\libs\bz2.lib
   Flags=0000000000000010
 end
+item: Install File
+  Source=.\datetime.lib
+  Destination=%MAINDIR%\libs\datetime.lib
+  Flags=0000000000000010
+end
 item: Install File
   Source=.\mmap.lib
   Destination=%MAINDIR%\libs\mmap.lib

PCbuild/readme.txt

@@ -48,6 +48,8 @@ _symtable
 _testcapi
     tests of the Python C API, run via Lib/test/test_capi.py, and
     implemented by module Modules/_testcapimodule.c
+datetime
+    datetimemodule.c
 mmap
     mmapmodule.c
 parser