[issue20144] Argument Clinic doesn't support named constants as default values
Larry Hastings
report at bugs.python.org
Mon Jan 6 17:38:52 CET 2014
Larry Hastings added the comment:
"sys.maxsize" won't work. inspect.Signature parses the __text_signature__ using ast.parse, and it only recognizes constant values and named constants (True/False/None) for the default value for parameters. Playing with ast, it looks like we'd have to support a tree of Attribute nodes, then look up sys (or whatever) and recursively getattr on it. Which would be new code.
Anyway it seems like a bad idea:
import inspect
import re
import sys
sys.maxsize = 3
inspect.signature(re.compile(".*").match)
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