Filter out pip freeze output starting w/ "[notice]"

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Common environment directories (`env, venv, .env, .venv`) are no longer
   excluded by name. Environments are detected by the presence of a python
   executable in `bin` or `Scripts` and excluded.
+- Lines output from `pip freeze` which start with [notice] are filtered out from the generated `requirements.txt`.
 
 ### Added
 - Added support for the `no_proxy` or `NO_PROXY` environment variables to specify

rsconnect/environment.py

@@ -145,15 +145,15 @@ def output_file(dirname, filename, package_manager):
 
 
 def pip_freeze():
-    """Inspect the environment using `pip freeze`.
+    """Inspect the environment using `pip freeze --disable-pip-version-check version`.
 
     Returns a dictionary containing the filename
     (always 'requirements.txt') and contents if successful,
     or a dictionary containing 'error' on failure.
     """
     try:
         proc = subprocess.Popen(
-            [sys.executable, "-m", "pip", "freeze"],
+            [sys.executable, "-m", "pip", "freeze", "--disable-pip-version-check"],
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
             universal_newlines=True,
@@ -168,7 +168,7 @@ def pip_freeze():
         msg = pip_stderr or ("exited with code %d" % pip_status)
         raise EnvironmentException("Error during pip freeze: %s" % msg)
 
-    pip_stdout = "\n".join([line for line in pip_stdout.split("\n") if "rsconnect" not in line])
+    pip_stdout = filter_pip_freeze_output(pip_stdout)
 
     pip_stdout = (
         "# requirements.txt generated by rsconnect-python on " + str(datetime.datetime.utcnow()) + "\n" + pip_stdout
@@ -182,6 +182,13 @@ def pip_freeze():
     }
 
 
+def filter_pip_freeze_output(pip_stdout):
+    # Filter out dependency on `rsconnect` and ignore output lines from pip which start with `[notice]`
+    return "\n".join(
+        [line for line in pip_stdout.split("\n") if (("rsconnect" not in line) and (line.find("[notice]") != 0))]
+    )
+
+
 def strip_ref(line):
     # remove erroneous conda build paths that will break pip install
     return line.split(" @ file:", 1)[0].strip()

rsconnect/main.py

@@ -744,7 +744,7 @@ def _warn_if_no_requirements_file(directory):
     """
     if not exists(join(directory, "requirements.txt")):
         click.secho(
-            "    Warning: Capturing the environment using 'pip freeze'.\n"
+            "    Warning: Capturing the environment using 'pip freeze --disable-pip-version-check'.\n"
             "             Consider creating a requirements.txt file instead.",
             fg="yellow",
         )

tests/test_environment.py

@@ -8,6 +8,7 @@
     detect_environment,
     get_default_locale,
     get_python_version,
+    filter_pip_freeze_output,
 )
 from .utils import get_dir
 
@@ -72,3 +73,24 @@ def test_pip_freeze(self):
             source="pip_freeze",
         )
         self.assertEqual(expected, result)
+
+    def test_filter_pip_freeze_output(self):
+        raw_stdout = "numpy\npandas\n[notice] A new release of pip is available: 23.1.2 -> 23.3\n\
+[notice] To update, run: pip install --upgrade pip"
+        filtered = filter_pip_freeze_output(raw_stdout)
+        expected = "numpy\npandas"
+
+        self.assertEqual(filtered, expected)
+
+        raw_stdout = "numpy\npandas"
+        filtered = filter_pip_freeze_output(raw_stdout)
+        expected = "numpy\npandas"
+
+        self.assertEqual(filtered, expected)
+
+        raw_stdout = "numpy\npandas\nnot at beginning [notice]\n\
+[notice] To update, run: pip install --upgrade pip"
+        filtered = filter_pip_freeze_output(raw_stdout)
+        expected = "numpy\npandas\nnot at beginning [notice]"
+
+        self.assertEqual(filtered, expected)