Hi, Using freshly-updated Cygwin 64-bit under Windows 7 Enterprise Ver 6.1 and Python 3 version 3.6.4.
The execution of the following script: import subprocess import _hashlib import _sha3 subprocess.run('pwd') always results in 'BlockingIOError: [Errno 11] Resource temporarily unavailable'. I saw this error first in a script that imported 'tempfile' together with 'subprocess' (in any order): import subprocess import tempfile subprocess.run('pwd') I then managed to narrow down the problem to the '_sha3' module. Notice that you need to import both '_hashlib' and '_sha3' *in that order*. If I swap the order and import '_sha3' before '_hashlib', the error becomes sporadic, sometimes it happens and sometimes not. This problem makes it impossible to use 'tempfile' and 'subprocess' in the same script. My workaround is currently to disable '_sha3' in '/lib/python3.6/hashlib.py' by adding at line 62: __always_supported = __always_supported[0:8] This problem only happens in Cygwin 64, 32-bit Cygwin works ok. Can anyone reproduce this problem? Best regards, Giuseppe -- Giuseppe B. Scelsi (giuseppe.sce...@analog.com) Senior Design Engineer, Analog Devices Australia Pty Ltd Unit 3, 97 Lewis Road, Wantirna, Victoria, 3152, AUSTRALIA Direct: +61 3 9881 9909 Main: +61 3 9881 9999 Fax: +61 3 9881 9988 Web: www.analog.com/au Embedded & Digital Signal Processing Software. This communication is proprietary and confidential. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple