75 lines
1.3 KiB
Python
75 lines
1.3 KiB
Python
# test sys.tracebacklimit
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try:
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import sys
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import io
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except ImportError:
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print("SKIP")
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raise SystemExit
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try:
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sys.tracebacklimit = 1000
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except AttributeError:
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print("SKIP")
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raise SystemExit
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if hasattr(sys, "print_exception"):
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print_exception = sys.print_exception
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else:
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import traceback
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print_exception = lambda e, f: traceback.print_exception(None, e, sys.exc_info()[2], file=f)
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def print_exc(e):
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buf = io.StringIO()
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print_exception(e, buf)
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s = buf.getvalue()
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for l in s.split("\n"):
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# Remove filename.
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if l.startswith(" File "):
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l = l.split('"')
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print(l[0], l[2])
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# uPy and CPy tracebacks differ in that CPy prints a source line for
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# each traceback entry. In this case, we know that offending line
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# has 4-space indent, so filter it out.
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elif not l.startswith(" "):
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print(l)
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def f0():
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raise ValueError("value")
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def f1():
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f0()
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def f2():
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f1()
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def f3():
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f2()
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def ftop():
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try:
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f3()
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except ValueError as er:
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print_exc(er)
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ftop()
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for limit in range(4, -2, -1):
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print("limit", limit)
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sys.tracebacklimit = limit
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ftop()
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# test deleting the attribute
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print(hasattr(sys, "tracebacklimit"))
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del sys.tracebacklimit
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print(hasattr(sys, "tracebacklimit"))
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