gh-92546: Move pprint benchmark into pyperformance (GH-94613)

This PR couples with python/pyperformance#222 and supersedes #92560. Inspired by #93096 (comment).

Automerge-Triggered-By: GH:ericsnowcurrently

Lib/pprint.py

@@ -637,19 +637,6 @@ def _recursion(object):
             % (type(object).__name__, id(object)))
 
 
-def _perfcheck(object=None):
-    import time
-    if object is None:
-        object = [("string", (1, 2), [3, 4], {5: 6, 7: 8})] * 100000
-    p = PrettyPrinter()
-    t1 = time.perf_counter()
-    p._safe_repr(object, {}, None, 0, True)
-    t2 = time.perf_counter()
-    p.pformat(object)
-    t3 = time.perf_counter()
-    print("_safe_repr:", t2 - t1)
-    print("pformat:", t3 - t2)
-
 def _wrap_bytes_repr(object, width, allowance):
     current = b''
     last = len(object) // 4 * 4
@@ -666,6 +653,3 @@ def _wrap_bytes_repr(object, width, allowance):
             current = candidate
     if current:
         yield repr(current)
-
-if __name__ == "__main__":
-    _perfcheck()

Misc/NEWS.d/next/Library/2022-07-06-21-24-03.gh-issue-92546.s5Upkh.rst

@@ -0,0 +1,2 @@
+An undocumented ``python -m pprint`` benchmark is moved into ``pprint``
+suite of pyperformance. Patch by Oleg Iarygin.