Feature/only venv

.gitignore

@@ -53,3 +53,5 @@ Session.vim
 *~
 
 /pipreqs/*.bak
+
+.venv

README.rst

@@ -47,6 +47,7 @@ Usage
 
     Options:
         --use-local           Use ONLY local package info instead of querying PyPI
+        --only-venv           Use ONLY venv packages instead local system
         --pypi-server <url>   Use custom PyPi server
         --proxy <url>         Use Proxy, parameter will be passed to requests library. You can also just set the
                               environments parameter in your terminal:

pipreqs/__main__.py

@@ -0,0 +1,4 @@
+from pipreqs import pipreqs
+
+if __name__ == "__main__":
+    pipreqs.main()

pipreqs/pipreqs.py

@@ -12,6 +12,7 @@
 
 Options:
     --use-local           Use ONLY local package info instead of querying PyPI.
+    --only-venv           Use ONLY venv packages instead local system.
     --pypi-server <url>   Use custom PyPi server.
     --proxy <url>         Use Proxy, parameter will be passed to requests
                           library. You can also just set the environments
@@ -49,6 +50,7 @@
 import requests
 from yarg import json2package
 from yarg.exceptions import HTTPError
+from typing import Optional
 
 from pipreqs import __version__
 
@@ -260,10 +262,29 @@ def get_imports_info(imports, pypi_server="https://pypi.python.org/pypi/", proxy
     return result
 
 
-def get_locally_installed_packages(encoding="utf-8"):
+def get_locally_installed_packages(use_venv_packages: bool, encoding="utf-8"):
     packages = []
     ignore = ["tests", "_tests", "egg", "EGG", "info"]
-    for path in sys.path:
+
+    venv_path = os.environ.get("VIRTUAL_ENV")
+    paths_to_search = []
+    if use_venv_packages and venv_path:
+        lib_path = os.path.join(venv_path, "lib")
+        if os.path.isdir(lib_path):
+            for entry in os.listdir(lib_path):
+                site_packages = os.path.join(lib_path, entry, "site-packages")
+                if os.path.isdir(site_packages):
+                    paths_to_search.append(site_packages)
+                    break
+    else:
+        if use_venv_packages and not venv_path:
+            logging.warning(
+                "You specified to use only the virtual environment packages, "
+                "but no virtual environment is currently active."
+            )
+        paths_to_search = sys.path
+
+    for path in paths_to_search:
         for root, dirs, files in os.walk(path):
             for item in files:
                 if "top_level" in item:
@@ -301,8 +322,8 @@ def get_locally_installed_packages(encoding="utf-8"):
     return packages
 
 
-def get_import_local(imports, encoding="utf-8"):
-    local = get_locally_installed_packages()
+def get_import_local(imports, use_venv_packages: Optional[bool] = False, encoding="utf-8"):
+    local = get_locally_installed_packages(use_venv_packages=use_venv_packages)
     result = []
     for item in imports:
         # search through local packages
@@ -551,7 +572,9 @@ def init(args):
 
     if args["--use-local"]:
         logging.debug("Getting package information ONLY from local installation.")
-        imports = get_import_local(candidates, encoding=encoding)
+        print(candidates)
+        imports = get_import_local(candidates, args["--only-venv"], encoding=encoding)
+        print(imports)
     else:
         logging.debug("Getting packages information from Local/PyPI")
         local = get_import_local(candidates, encoding=encoding)

tests/_data_ignore/requirements.txt

@@ -0,0 +1,13 @@
+asposestorage==1.0.2
+beautifulsoup4==4.13.3
+boto==2.49.0
+docopt==0.6.2
+Flask==3.1.0
+ipython==8.12.3
+nose==1.3.7
+peewee==3.17.9
+pyflakes==3.1.0
+pyflakes==3.3.2
+Requests==2.32.3
+SQLAlchemy==2.0.40
+ujson==5.10.0

tests/_data_notebook/requirements.txt

@@ -0,0 +1 @@
+

tests/test_pipreqs.py

@@ -156,6 +156,22 @@ def test_get_use_local_only(self):
         for item in imports_with_info:
             self.assertTrue(item["name"].lower() in self.local)
 
+    @patch("pipreqs.pipreqs.get_locally_installed_packages")
+    def test_get_import_local_only_from_venv(self, mock_get_local_packages):
+        mock_get_local_packages.return_value = [
+            {"name": "requests", "version": "2.31.0", "exports": ["requests"]},
+            {"name": "docopt", "version": "0.6.2", "exports": ["docopt"]},
+        ]
+
+        imports = {"requests": "2.31.0", "docopt": "0.6.2", "flask": "3.0.2"}
+
+        result = pipreqs.get_import_local(imports, use_venv_packages=True)
+
+        self.assertEqual(result, [
+            {"name": "requests", "version": "2.31.0", "exports": ["requests"]},
+            {"name": "docopt", "version": "0.6.2", "exports": ["docopt"]},
+        ])
+
     def test_init(self):
         """
         Test that all modules we will test upon are in requirements file
@@ -194,6 +210,7 @@ def test_init_local_only(self):
                 "--savepath": None,
                 "--print": False,
                 "--use-local": True,
+                "--only-venv": False,
                 "--force": True,
                 "--proxy": None,
                 "--pypi-server": None,