bpo-21016: pydoc and trace use sysconfig (GH-18476)

bpo-21016: pydoc and trace use sysconfig (GH-18476) · python/cpython@ca133e5

Original file line number	Diff line number	Diff line change
`@@ -66,6 +66,7 @@ class or function within a module or module in a package. If the`
`66`	`66`	`import platform`
`67`	`67`	`import re`
`68`	`68`	`import sys`
	`69`	`+import sysconfig`
`69`	`70`	`import time`
`70`	`71`	`import tokenize`
`71`	`72`	`import urllib.parse`
`@@ -398,9 +399,7 @@ def fail(self, object, name=None, *args):`
`398`	`399`
`399`	`400`	`docmodule = docclass = docroutine = docother = docproperty = docdata = fail`
`400`	`401`
`401`		`-def getdocloc(self, object,`
`402`		`-basedir=os.path.join(sys.base_exec_prefix, "lib",`
`403`		`-"python%d.%d" % sys.version_info[:2])):`
	`402`	`+def getdocloc(self, object, basedir=sysconfig.get_path('stdlib')):`
`404`	`403`	`"""Return the location of module docs or None"""`
`405`	`404`
`406`	`405`	`try:`