[issue40855] statistics.stdev ignore xbar argument

Matti added the comment: I meant to write "pre-calculate". -- ___ Python tracker <https://bugs.python.org/issue40855> ___ ___ Python-bugs-list mailing

[issue40855] statistics.stdev ignore xbar argument

Matti added the comment: >I see what you're trying to do but think that interpretation is surprising >and is at odds with the existing and intended uses of the *xbar* argument. > >The goals were to allow the mean to be precomputed (common case) or to be >recentered (uncommon)

[issue40855] statistics.stdev ignore xbar argument

Matti added the comment: Hi Raymond and Steven! I'm happy that you are solving this issue but do you have any comment on my previous answer? -- ___ Python tracker <https://bugs.python.org/issue40

[issue40855] statistics.stdev ignore xbar argument

Matti added the comment: If we estimate the mean using a sample we loose one degree of freedom so it will be divided by N-1, while if we have the mean independent of the sample it should be divided by N to be unbiased. i.e. example 1 sqrt(((1-1.5)²+(2-1.5)²)/(2-1)) = 0.7... example 3 sqrt

[issue40855] statistics.stdev ignore xbar argument

New submission from Matti : statistics.variance also has the same problem. >>> import statistics >>> statistics.stdev([1,2]) 0.7071067811865476 >>> statistics.stdev([1,2], 3) 0.7071067811865476 >>> statistics.stdev([1,2], 1.5) 0.7071067811865476 should be

[issue14897] struct.pack raises unexpected error message

Matti Mäki added the comment: I filled up the contributor form and gave it to Petri Lehtinen 2012-10-22 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14897

[issue14897] struct.pack raises unexpected error message

Matti Mäki added the comment: A second try, now taking into account buffer and offset params in pack_into. -- Added file: http://bugs.python.org/file27689/issue14897-2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14897

[issue14897] struct.pack raises unexpected error message

Matti Mäki added the comment: Changed the error message as suggested by http://bugs.python.org/issue14897#msg161493 Also made similar change to struct.pack_into -- keywords: +patch nosy: +makimat Added file: http://bugs.python.org/file27679/issue14897.patch

[issue1912] Segmentation fault

New submission from Matti Punkeri: Python seg faults after 20-30 hours. The running Python application is a Qt based user interface which handles several SSH threads. Backtrace is attached. -- files: backtrace.txt messages: 61558 nosy: mpunkeri severity: major status: open title

[issue1912] Segmentation fault

Matti Punkeri added the comment: And the program is running on SuSE Linux, 2.6.11.4-20a-default, gcc version 3.3.5 __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue1912

[issue1239] openpty does not give bidirectional pipe

Changes by Matti Katila: -- components: None severity: normal status: open title: openpty does not give bidirectional pipe type: behavior versions: Python 2.5 __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue1239

[issue1239] openpty does not give bidirectional pipe

New submission from Matti Katila: http://rafb.net/p/t8cqSt71.html -- nosy: +mudyc __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue1239 __ ___ Python-bugs-list mailing

[issue1239] openpty does not give bidirectional pipe

Matti Katila added the comment: Linux Programmer’s Manual for ptmx and pts - pseudo-terminal master and slave states: Data written to the slave is presented on the master descriptor as input. Data written to the master is presented to the slave as input. The data can be read from slave

[issue1239] openpty does not give bidirectional pipe

Matti Katila added the comment: Not a real issue - it's a standard behaviour of tty. Fix is to set -icanon: m,s = os.openpty() s = os.ttyname(s) os.system( 'stty cs8 -icanon -echo %s' % s ) see, http://www.eulogika.net/download/eutalk_20040302/pymouse.html The issue can be closed