Fix bootstrap issues when building without threads
diff --git a/Lib/_dummy_thread.py b/Lib/_dummy_thread.py
index e10bae8..ed50520 100644
--- a/Lib/_dummy_thread.py
+++ b/Lib/_dummy_thread.py
@@ -16,12 +16,14 @@
__all__ = ['error', 'start_new_thread', 'exit', 'get_ident', 'allocate_lock',
'interrupt_main', 'LockType']
-import traceback as _traceback
-import time
-
# A dummy value
TIMEOUT_MAX = 2**31
+# NOTE: this module can be imported early in the extension building process,
+# and so top level imports of other modules should be avoided. Instead, all
+# imports are done when needed on a function-by-function basis. Since threads
+# are disabled, the import lock should not be an issue anyway (??).
+
class error(Exception):
"""Dummy implementation of _thread.error."""
@@ -52,7 +54,8 @@
except SystemExit:
pass
except:
- _traceback.print_exc()
+ import traceback
+ traceback.print_exc()
_main = True
global _interrupt
if _interrupt:
@@ -116,6 +119,7 @@
return True
else:
if timeout > 0:
+ import time
time.sleep(timeout)
return False