On Saturday, May 23, 2020 at 2:44:04 PM UTC-4, Matthias Köppe wrote:
>
> For debugging this, please note that this is executed using
> build/bin/sage-system-python, which is not necessarily the same as ./sage
> -python.
>
>>
>>
Interesting. In which case my system Python is always py2. Here is
another data point, from a Python 3 build (hopefully zooming to mirrors
soon). urllib doesn't like
$ ./build/bin/sage-system-python
Python 2.7.10 (default, Oct 23 2015, 19:19:21)
[GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib
>>> eval(urllib.urlopen('http://www.sagemath.org/mirror_list').read())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1
error code: 1010
^
SyntaxError: invalid syntax
>>> urllib.urlopen('http://www.sagemath.org/mirror_list').read()
'error code: 1010'
$ ./sage -python
Python 3.7.3 (default, May 23 2020, 09:48:14)
[Clang 7.3.0 (clang-703.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib
>>> eval(urllib.urlopen('http://www.sagemath.org/mirror_list').read())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: module 'urllib' has no attribute 'urlopen'
>>> urllib.urlopen('http://www.sagemath.org/mirror_list').read()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: module 'urllib' has no attribute 'url open'
>From https://docs.python.org/3/library/urllib.request.html: The legacy
urllib.urlopen function from Python 2.6 and earlier has been discontinued;
urllib.request.urlopen()
<https://docs.python.org/3/library/urllib.request.html#urllib.request.urlopen>
corresponds
to the old urllib2.urlopen.
Note that
https://github.com/sagemath/sage/blob/4427340fcd58c915e9b803cb5fbc8e720a8c335c/build/sage_bootstrap/download/mirror_list.py#L179
still has one instance of this function
while
https://github.com/sagemath/website/blob/785f16e785721e51e1c222bbb2e17d5dcc54cb07/scripts/mirror_manager.py#L456
has some references to this which is presumably where I got it from.
But in any case that is the error. Conceivably relevant:
* https://twitter.com/scottmmjackson/status/1215639072464613377
I tried to trace it further but I just don't have time to do so, as it
really starts to require messing with the entire mirror list module and I
mainly just wanted to build binaries. But I think these things should be
looked into, especially the implied (if not actual) use of urllib.urlopen.
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