#1478 Added --no-stdout option

_pytest/terminal.py

@@ -42,6 +42,9 @@ def pytest_addoption(parser):
                      action="store", dest="tbstyle", default='auto',
                      choices=['auto', 'long', 'short', 'no', 'line', 'native'],
                      help="traceback print mode (auto/long/short/line/native/no).")
+    group._addoption('--no-stdout',
+                     action="store_false", dest="nostdout",
+                     help="Do not print stdout")
     group._addoption('--fulltrace', '--full-trace',
                      action="store_true", default=False,
                      help="don't cut any tracebacks (default is to cut).")
@@ -623,6 +626,8 @@ class TerminalReporter:
     def _outrep_summary(self, rep):
         rep.toterminal(self._tw)
         for secname, content in rep.sections:
+            if not self.config.option.nostdout and 'stdout' in secname:
+                continue
             self._tw.sep("-", secname)
             if content[-1:] == "\n":
                 content = content[:-1]

changelog/1478.trivial

@@ -0,0 +1 @@
+Added `--no-stdout` feature. Stdout will not shown in terminal if you use this option. Only Stderr will shown.

testing/test_terminal.py

@@ -823,6 +823,19 @@ def pytest_report_header(config, startdir):
             str(testdir.tmpdir),
         ])
 
+    def test_no_stdout(self, testdir):
+        testdir.makepyfile("""
+            def test_one():
+                print('!This is stdout!')
+                assert False, 'Something failed'
+        """)
+
+        result = testdir.runpytest("--tb=short")
+        result.stdout.fnmatch_lines(["!This is stdout!"])
+
+        result = testdir.runpytest("--no-stdout", "--tb=short")
+        assert "!This is stdout!" not in result.stdout.str()
+
 
 @pytest.mark.xfail("not hasattr(os, 'dup')")
 def test_fdopen_kept_alive_issue124(testdir):