[issue34216] python platform no child error

[sachin]

New submission from sachin :

We are trying to utilize librosa library for some processing. When we try to 
load the librosa library, python platform library is triggered via the  Numba 
library. Numba is trying to find the underlying OS which is installed. Function 
"_syscmd_uname" is triggered to find out the underlying os, but in the above 
function the os.popen object which is opened to determine the OS , but when the 
object is closed it throws a no child process error. This is mainly due to the 
closure of the popen object before the close fuction is called. we can get 
around this problem 
by catching the error and returning a default value if the closing of the popen 
pipeline fails

python platform.py file

def _syscmd_uname(option, default=''):

""" Interface to the system's uname command.
"""
if sys.platform in ('dos', 'win32', 'win16'):
# XXX Others too ?
return default
try:
f = os.popen('uname %s 2> %s' % (option, DEV_NULL))
except (AttributeError, OSError):
return default
output = f.read().strip()
rc = f.close()  # error at this place enclose in a try except statement to 
catrch the exception
if not output or rc:
return default
else:
return output

--
components: Build
messages: 322330
nosy: sskamble619
priority: normal
severity: normal
status: open
title: python platform no child error
type: compile error
versions: Python 2.7

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[issue32080] Error Installing Python 3.6.3 on ubuntu 16.04

[Sachin Pathave]

New submission from Sachin Pathave :

test failed when I run command $make test
FAILED (failures=1, skipped=1)
test test_re failed
2 tests failed again:
test_re test_venv

--
components: 2to3 (2.x to 3.x conversion tool)
files: test.Screenshot from 2017-11-20 11-12-41.png
messages: 306529
nosy: sachin
priority: normal
severity: normal
status: open
title: Error Installing Python 3.6.3 on ubuntu 16.04
type: resource usage
versions: Python 3.6
Added file: https://bugs.python.org/file47277/test.Screenshot from 2017-11-20 
11-12-41.png

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[issue29536] test_hashlib failure on Ubuntu 16.04

[Sachin Kumar]

New submission from Sachin Kumar:

When executing 
./python -m test -v test_hashlib
on Python 3.7, the test fails.

This is the complete traceback:

CPython 3.7.0a0 (default, Feb 8 2017, 03:10:42) [GCC 5.4.0 20160609]
==   Linux-4.4.0-62-generic-x86_64-with-debian-stretch-sid little-endian
==   hash algorithm: siphash24 64bit
==  cwd: /XXX/build/test_python_14437
==  encodings: locale=UTF-8, FS=utf-8
Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, 
dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, 
verbose=0, bytes_warning=0, quiet=0, hash_randomization=1, isolated=0)
Run tests sequentially
0:00:00 [1/1] test_hashlib
test_algorithms_available (test.test_hashlib.HashLibTestCase) ... ok
test_algorithms_guaranteed (test.test_hashlib.HashLibTestCase) ... ok
test_blake2b (test.test_hashlib.HashLibTestCase) ... ok
test_blake2b_vectors (test.test_hashlib.HashLibTestCase) ... ERROR
test_blake2s (test.test_hashlib.HashLibTestCase) ... ok
test_blake2s_vectors (test.test_hashlib.HashLibTestCase) ... ERROR
test_blocksize_name (test.test_hashlib.HashLibTestCase) ... ok
test_blocksize_name_blake2 (test.test_hashlib.HashLibTestCase) ... ok
test_blocksize_name_sha3 (test.test_hashlib.HashLibTestCase) ... ok
test_case_blake2b_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_blake2b_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_blake2s_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_blake2s_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_md5_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_md5_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_md5_2 (test.test_hashlib.HashLibTestCase) ... ok
test_case_md5_huge (test.test_hashlib.HashLibTestCase) ... skipped 'not enough 
memory: 4.0G minimum needed'
test_case_md5_uintmax (test.test_hashlib.HashLibTestCase) ... skipped 'not 
enough memory: 4.0G minimum needed'
test_case_sha1_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha1_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha1_2 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha1_3 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha224_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha224_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha224_2 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha224_3 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha256_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha256_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha256_2 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha256_3 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha384_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha384_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha384_2 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha384_3 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha3_224_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha3_224_vector (test.test_hashlib.HashLibTestCase) ... ERROR
test_case_sha3_256_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha3_256_vector (test.test_hashlib.HashLibTestCase) ... ERROR
test_case_sha3_384_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha3_384_vector (test.test_hashlib.HashLibTestCase) ... ERROR
test_case_sha3_512_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha3_512_vector (test.test_hashlib.HashLibTestCase) ... ERROR
test_case_sha512_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha512_1 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha512_2 (test.test_hashlib.HashLibTestCase) ... ok
test_case_sha512_3 (test.test_hashlib.HashLibTestCase) ... ok
test_case_shake128_vector (test.test_hashlib.HashLibTestCase) ... ERROR
test_case_shake256_vector (test.test_hashlib.HashLibTestCase) ... ERROR
test_case_shake_128_0 (test.test_hashlib.HashLibTestCase) ... ok
test_case_shake_256_0 (test.test_hashlib.HashLibTestCase) ... ok
test_extra_sha3 (test.test_hashlib.HashLibTestCase) ... ok
test_get_builtin_constructor (test.test_hashlib.HashLibTestCase) ... ok
test_gil (test.test_hashlib.HashLibTestCase) ... ok
test_hash_array (test.test_hashlib.HashLibTestCase) ... ok
test_hexdigest (test.test_hashlib.HashLibTestCase) ... ok
test_large_update (test.test_hashlib.HashLibTestCase) ... ok
test_name_attribute (test.test_hashlib.HashLibTestCase) ... ok
test_no_unicode (test.test_hashlib.HashLibTestCase) ... ok
test_no_unicode_blake2 (test.test_hashlib.HashLibTestCase) ... ok
test_no_unicode_sha3 (test.test_hashlib.HashLibTestCase) ... ok
test_threaded_hashing (test.test_hashlib.HashLibTestCase) ... ok
test_unknown_hash (test.test_hashlib.HashLibTestCase) ... ok
test_pbkdf2_hmac_c (test.test_hashlib.KDFTests) ... ok
test_pbkdf2_hmac_py (test.test_hashlib.KDFTests) ... ok
test_scrypt (test.test_hashlib.KDFTests) ... skipped '   test requires OpenSSL 
> 1.1'

===

[issue29536] test_hashlib failure on Ubuntu 16.04

[Sachin Kumar]

Sachin Kumar added the comment:

@Xiang
I tried that command earlier but that returned around 8 failed test cases. I 
think it is due to a fault with my connection. Although I can replicate this 
error every time. I've tried over 5 times already.


@Martin
I compared the data. My file has been attached. Deleting the files fixed the 
issue. Can all the test files be deleted safely, since some other tests are 
failing too?

--
Added file: http://bugs.python.org/file46639/blake2b.txt

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