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Bokep
- Viewed 24k times16edited May 23, 2017 at 12:00
The fileno() method is not implemented in StringIO, as it is not a real file (so has no associated file descriptor). From the source:
- fileno() is left unimplemented so that code which uses ittriggers an exception early.It is possible that someone replaced sys.stdout with a StringIO instance, to capture output.
For example, when I run your code this way I get the same exception:
from StringIO import StringIOsys.stdout = StringIO()captureOutput(testfunc)Error:
oldstdout = os.dup(sys.stdout.fileno())Content Under CC-BY-SA license AttributeError: StringIO instance has no attribute 'fileno'
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