Added requested modifications

AUTHORS

@@ -227,6 +227,7 @@ Pedro Algarvio
 Philipp Loose
 Pieter Mulder
 Piotr Banaszkiewicz
+Piotr Helm
 Prashant Anand
 Pulkit Goyal
 Punyashloka Biswal

changelog/6471.feature.rst

@@ -0,0 +1 @@
+New flags --no-header and --no-summary added. The first one disables header, the second one disables summary. 

src/_pytest/terminal.py

@@ -115,6 +115,20 @@ def pytest_addoption(parser: Parser) -> None:
         dest="verbose",
         help="increase verbosity.",
     )
+    group._addoption(
+        "--no-header",
+        action="count",
+        default=0,
+        dest="no_header",
+        help="disable header",
+    )
+    group._addoption(
+        "--no-summary",
+        action="count",
+        default=0,
+        dest="no_summary",
+        help="disable summary",
+    )
     group._addoption(
         "-q",
         "--quiet",
@@ -351,6 +365,14 @@ class TerminalReporter:
     def showheader(self) -> bool:
         return self.verbosity >= 0
 
+    @property
+    def no_header(self) -> bool:
+        return self.config.option.no_header
+
+    @property
+    def no_summary(self) -> bool:
+        return self.config.option.no_summary
+
     @property
     def showfspath(self) -> bool:
         if self._showfspath is None:
@@ -660,6 +682,7 @@ class TerminalReporter:
             return
         self.write_sep("=", "test session starts", bold=True)
         verinfo = platform.python_version()
+        if self.no_header == 0:
             msg = "platform {} -- Python {}".format(sys.platform, verinfo)
             pypy_version_info = getattr(sys, "pypy_version_info", None)
             if pypy_version_info:
@@ -775,7 +798,7 @@ class TerminalReporter:
             ExitCode.USAGE_ERROR,
             ExitCode.NO_TESTS_COLLECTED,
         )
-        if exitstatus in summary_exit_codes:
+        if exitstatus in summary_exit_codes and self.no_summary == 0:
             self.config.hook.pytest_terminal_summary(
                 terminalreporter=self, exitstatus=exitstatus, config=self.config
             )