gh-133438: Fix the use of the terms "argument" and "parameter" in dis.show_code()

Lib/dis.py

@@ -246,9 +246,9 @@ def _format_code_info(co):
     lines = []
     lines.append("Name:              %s" % co.co_name)
     lines.append("Filename:          %s" % co.co_filename)
-    lines.append("Argument count:    %s" % co.co_argcount)
-    lines.append("Positional-only arguments: %s" % co.co_posonlyargcount)
-    lines.append("Kw-only arguments: %s" % co.co_kwonlyargcount)
+    lines.append("Positional parameters: %s" % co.co_argcount)
+    lines.append("Positional-only parameters: %s" % co.co_posonlyargcount)
+    lines.append("Keyword-only parameters: %s" % co.co_kwonlyargcount)
     lines.append("Number of locals:  %s" % co.co_nlocals)
     lines.append("Stack size:        %s" % co.co_stacksize)
     lines.append("Flags:             %s" % pretty_flags(co.co_flags))

Lib/test/test_dis.py

@@ -1461,9 +1461,9 @@ def get_disassembly(self, func, lasti=-1, wrapper=True, **kwargs):
 code_info_code_info = f"""\
 Name:              code_info
 Filename:          (.*)
-Argument count:    1
-Positional-only arguments: 0
-Kw-only arguments: 0
+Positional parameters: 1
+Positional-only parameters: 0
+Keyword-only parameters: 0
 Number of locals:  1
 Stack size:        \\d+
 Flags:             OPTIMIZED, NEWLOCALS, HAS_DOCSTRING
@@ -1485,9 +1485,9 @@ def f(c=c):
 code_info_tricky = """\
 Name:              tricky
 Filename:          (.*)
-Argument count:    5
-Positional-only arguments: 2
-Kw-only arguments: 3
+Positional parameters: 5
+Positional-only parameters: 2
+Keyword-only parameters: 3
 Number of locals:  10
 Stack size:        \\d+
 Flags:             OPTIMIZED, NEWLOCALS, VARARGS, VARKEYWORDS, GENERATOR
@@ -1520,9 +1520,9 @@ def f(c=c):
 
 code_info_tricky_nested_f = """\
 Filename:          (.*)
-Argument count:    1
-Positional-only arguments: 0
-Kw-only arguments: 0
+Positional parameters: 1
+Positional-only parameters: 0
+Keyword-only parameters: 0
 Number of locals:  1
 Stack size:        \\d+
 Flags:             OPTIMIZED, NEWLOCALS, NESTED
@@ -1543,9 +1543,9 @@ def f(c=c):
 code_info_expr_str = """\
 Name:              <module>
 Filename:          <disassembly>
-Argument count:    0
-Positional-only arguments: 0
-Kw-only arguments: 0
+Positional parameters: 0
+Positional-only parameters: 0
+Keyword-only parameters: 0
 Number of locals:  0
 Stack size:        \\d+
 Flags:             0x0
@@ -1557,9 +1557,9 @@ def f(c=c):
 code_info_simple_stmt_str = """\
 Name:              <module>
 Filename:          <disassembly>
-Argument count:    0
-Positional-only arguments: 0
-Kw-only arguments: 0
+Positional parameters: 0
+Positional-only parameters: 0
+Keyword-only parameters: 0
 Number of locals:  0
 Stack size:        \\d+
 Flags:             0x0
@@ -1572,9 +1572,9 @@ def f(c=c):
 code_info_compound_stmt_str = """\
 Name:              <module>
 Filename:          <disassembly>
-Argument count:    0
-Positional-only arguments: 0
-Kw-only arguments: 0
+Positional parameters: 0
+Positional-only parameters: 0
+Keyword-only parameters: 0
 Number of locals:  0
 Stack size:        \\d+
 Flags:             0x0
@@ -1592,9 +1592,9 @@ async def async_def():
 code_info_async_def = """\
 Name:              async_def
 Filename:          (.*)
-Argument count:    0
-Positional-only arguments: 0
-Kw-only arguments: 0
+Positional parameters: 0
+Positional-only parameters: 0
+Keyword-only parameters: 0
 Number of locals:  2
 Stack size:        \\d+
 Flags:             OPTIMIZED, NEWLOCALS, COROUTINE

Misc/NEWS.d/next/Library/2025-06-05-12-47-32.gh-issue-133438.R4U-Vz.rst

@@ -0,0 +1,2 @@
+Fix the use of the terms "argument" and "parameter" in
+:func:`dis.show_code`.