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try:
import io
import sys
except ImportError:
print("SKIP")
raise SystemExit
if hasattr(sys, "print_exception"):
print_exception = sys.print_exception
else:
import traceback
print_exception = lambda e, f: traceback.print_exception(None, e, sys.exc_info()[2], file=f)
def print_exc(e):
buf = io.StringIO()
print_exception(e, buf)
s = buf.getvalue()
for l in s.split("\n"):
# uPy on pyboard prints <stdin> as file, so remove filename.
if l.startswith(" File "):
l = l.split('"')
print(l[0], l[2])
# uPy and CPy tracebacks differ in that CPy prints a source line for
# each traceback entry. In this case, we know that offending line
# has 4-space indent, so filter it out.
elif not l.startswith(" "):
print(l)
# basic exception message
try:
raise Exception("msg")
except Exception as e:
print("caught")
print_exc(e)
# exception message with more than 1 source-code line
def f():
g()
def g():
raise Exception("fail")
try:
f()
except Exception as e:
print("caught")
print_exc(e)
# Test that an exception propagated through a finally doesn't have a traceback added there
try:
try:
f()
finally:
print("finally")
except Exception as e:
print("caught")
print_exc(e)
# Test that re-raising an exception doesn't add traceback info
try:
try:
f()
except Exception as e:
print("reraise")
print_exc(e)
raise
except Exception as e:
print("caught")
print_exc(e)
# Here we have a function with lots of bytecode generated for a single source-line, and
# there is an error right at the end of the bytecode. It should report the correct line.
def f():
f([1, 2], [1, 2], [1, 2], {1: 1, 1: 1, 1: 1, 1: 1, 1: 1, 1: 1, 1: f.X})
return 1
try:
f()
except Exception as e:
print_exc(e)
# Test non-stream object passed as output object, only valid for uPy
if hasattr(sys, "print_exception"):
try:
sys.print_exception(Exception, 1)
had_exception = False
except OSError:
had_exception = True
assert had_exception
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