Make numerous improvements

- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands

third_party/python/Lib/_strptime.py

@@ -13,9 +13,6 @@ FUNCTIONS:
 import time
 # import locale
 import calendar
-from re import compile as re_compile
-from re import IGNORECASE
-from re import escape as re_escape
 from datetime import (date as datetime_date,
                       timedelta as datetime_timedelta,
                       timezone as datetime_timezone)
@@ -238,6 +235,11 @@ class TimeRE(dict):
         matching when 'abcdef' should have been the match).
 
         """
+        try:
+            from re import escape as re_escape
+        except ImportError:
+            raise ImportError('cosmopolitan _strptime.TimeRE() '
+                              'requires manually yoinking re')
         to_convert = sorted(to_convert, key=len, reverse=True)
         for value in to_convert:
             if value != '':
@@ -253,8 +255,12 @@ class TimeRE(dict):
 
         Need to make sure that any characters that might be interpreted as
         regex syntax are escaped.
-
         """
+        try:
+            from re import compile as re_compile
+        except ImportError:
+            raise ImportError('cosmopolitan _strptime.TimeRE() '
+                              'requires manually yoinking re')
         processed_format = ''
         # The sub() call escapes all characters that might be misconstrued
         # as regex syntax.  Cannot use re.escape since we have to deal with
@@ -273,6 +279,12 @@ class TimeRE(dict):
 
     def compile(self, format):
         """Return a compiled re object for the format string."""
+        try:
+            from re import compile as re_compile
+            from re import IGNORECASE
+        except ImportError:
+            raise ImportError('cosmopolitan _strptime.TimeRE() '
+                              'requires manually yoinking re')
         return re_compile(self.pattern(format), IGNORECASE)
 
 _cache_lock = _thread_allocate_lock()