A Context Manager that Records Suppressed Errors

contextlib.suppress swallows exceptions silently. Write a class Collect used as a context manager that suppresses the given exception types but records them:

errors = Collect(ValueError, KeyError)
with errors:
    int("x")
errors.caught  # [ValueError(...)]

• the same instance can be used in several with blocks and keeps appending
• exceptions of other types propagate normally
• bool(errors) is True if anything was caught