Add a benchmark based on python -m pprint (#222)

* Port pprint performance tests

* Benchmark _safe_repr only if it exists

* Rename the benchmark

* Remove a spurious `cmd` variable

* Move constant object to a module level

* Add a description

* Rename benchmark labels

* Make the benchmark top-level

* Return accidentally removed full test names

Author: arhadthedev

pyperformance/data-files/benchmarks/MANIFEST

@@ -39,6 +39,7 @@ pickle_dict	<local:pickle>
 pickle_list	<local:pickle>
 pickle_pure_python	<local:pickle>
 pidigits	<local>
+pprint	<local>
 pyflate	<local>
 python_startup	<local>
 python_startup_no_site	<local:python_startup>

pyperformance/data-files/benchmarks/bm_pprint/pyproject.toml

@@ -0,0 +1,9 @@
+[project]
+name = "pyperformance_bm_pprint"
+requires-python = ">=3.8"
+dependencies = ["pyperf"]
+urls = {repository = "https://github.com/python/pyperformance"}
+dynamic = ["version"]
+
+[tool.pyperformance]
+name = "pprint"

pyperformance/data-files/benchmarks/bm_pprint/run_benchmark.py

@@ -0,0 +1,23 @@
+"""Test the performance of pprint.PrettyPrinter.
+
+This benchmark was available as `python -m pprint` until Python 3.12.
+
+Authors: Fred Drake (original), Oleg Iarygin (pyperformance port).
+"""
+
+import pyperf
+from pprint import PrettyPrinter
+
+
+printable = [('string', (1, 2), [3, 4], {5: 6, 7: 8})] * 100_000
+p = PrettyPrinter()
+
+
+if __name__ == '__main__':
+    runner = pyperf.Runner()
+    runner.metadata['description'] = 'pprint benchmark'
+
+    if hasattr(p, '_safe_repr'):
+        runner.bench_func('pprint_safe_repr', p._safe_repr,
+                          printable, {}, None, 0)
+    runner.bench_func('pprint_pformat', p.pformat, printable)