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gh-99815: remove unused 'invalid' sentinel value and code that checks for it in inspect.signature parsing #21104

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merged 2 commits into from
Nov 27, 2022
+1 −7
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gh-99815: remove unused 'invalid' sentinel value and code that checks for it in inspect.signature parsing #21104

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e6eaf8e
Simplify routine in inspect.signature parsing
asottile Jun 24, 2020
9841a06
Merge branch 'main' into inspect_signature_simplify
iritkatriel Nov 27, 2022
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8 changes: 1 addition & 7 deletions Lib/inspect.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2185,7 +2185,6 @@ def _signature_fromstr(cls, obj, s, skip_bound_arg=True):

parameters = []
empty = Parameter.empty
invalid = object()

module = None
module_dict = {}
Expand Down Expand Up @@ -2235,17 +2234,12 @@ def visit_Name(self, node):

def p(name_node, default_node, default=empty):
name = parse_name(name_node)
if name is invalid:
return None
if default_node and default_node is not _empty:
try:
default_node = RewriteSymbolics().visit(default_node)
o = ast.literal_eval(default_node)
default = ast.literal_eval(default_node)
except ValueError:
o = invalid
if o is invalid:
return None
default = o if o is not invalid else default
parameters.append(Parameter(name, kind, default=default, annotation=empty))

# non-keyword-only parameters
Expand Down