Message 69918 - Python tracker

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In-reply-to
Author	terry.reedy
Recipients	georg.brandl, terry.reedy
Date	2008年07月17日.22:24:16
SpamBayes Score	0.00034154995
Marked as misclassified	No
Message-id	<1216333457.94.0.303934316374.issue3400@psf.upfronthosting.co.za>

Content
dis / Python Bytecode Instructions is missing UNPACK_EX STORE_LOCALS LOAD_BUILD_CLASS MAKE_BYTES which appear in dis.opname (3.0 version). Suggestion: After entry for UNPACK_SEQUENCE(count), add UNPACK_EX(bytepair) Used for starred assignment. Similar to UNPACK_SEQUENCE except 1) the lo and hi bytes of the argument are the number of unstarred targets before and after the starred target and 2) the values between the first lo and last hi are collected into a list for the starred target. I deduced this because a,b; a,b; a,b,c; a,b,c; and a,b,*c as targets produce byte pairs of 0,1; 1,0; 0,2; 1,1; and 2,0 (arguments 256, 1, 512, 257, and 2). The other three are new since 2.5 but do not make much sense to me. I will ask on pydev for clarification. I do not have 2.6 to check its version of .opname to determine which of these belong there too.

Content

dis / Python Bytecode Instructions is missing
UNPACK_EX
STORE_LOCALS
LOAD_BUILD_CLASS
MAKE_BYTES
which appear in dis.opname (3.0 version).
Suggestion: After entry for UNPACK_SEQUENCE(count), add
UNPACK_EX(bytepair)
Used for starred assignment. Similar to UNPACK_SEQUENCE except 1) the
lo and hi bytes of the argument are the number of unstarred targets
before and after the starred target and 2) the values between the first
lo and last hi are collected into a list for the starred target.
I deduced this because *a,b; a,*b; *a,b,c; a,*b,c; and a,b,*c as targets
produce byte pairs of 0,1; 1,0; 0,2; 1,1; and 2,0 (arguments 256, 1,
512, 257, and 2).
The other three are new since 2.5 but do not make much sense to me. I
will ask on pydev for clarification. I do not have 2.6 to check its
version of .opname to determine which of these belong there too.

History
Date	User	Action	Args
2008年07月17日 22:24:18	terry.reedy	set	spambayes_score: 0.00034155 -> 0.00034154995 recipients: + terry.reedy, georg.brandl
2008年07月17日 22:24:17	terry.reedy	set	spambayes_score: 0.00034155 -> 0.00034155 messageid: <1216333457.94.0.303934316374.issue3400@psf.upfronthosting.co.za>
2008年07月17日 22:24:17	terry.reedy	link	issue3400 messages
2008年07月17日 22:24:16	terry.reedy	create

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