Added the "compact" keyword argument to TracebackException.__init__()

This is a requirement to achieve Python 3.10 compatibility.

trio/_core/_multierror.py

@@ -381,11 +381,17 @@ def traceback_exception_init(
  limit=None,
  lookup_lines=True,
  capture_locals=False,
+ compact=False,
  _seen=None,
 ):
  if _seen is None:
  _seen = set()
 
+ if sys.version_info >= (3, 10):
+ kwargs = {"compact": compact}
+ else:
+ kwargs = {}
+
  # Capture the original exception and its cause and context as TracebackExceptions
  traceback_exception_original_init(
  self,
@@ -396,6 +402,7 @@ def traceback_exception_init(
  lookup_lines=lookup_lines,
  capture_locals=capture_locals,
  _seen=_seen,
+ **kwargs,
  )
 
  # Capture each of the exceptions in the MultiError along with each of their causes and contexts