Flexibile argument specification when specifying multiple cateogires. (#5606)

* Flexibile argument specification when specifying multiple categories.

* fix lint

* add test and news fragment.

news/5570.bugfix.rst

@@ -0,0 +1 @@
+Fix ``--categories`` argument inconsistency between requirements command and install/sync by allowing comma seperated values or spaces.

pipenv/cli/command.py

@@ -1,4 +1,5 @@
 import os
+import re
 import sys
 
 from pipenv import environments
@@ -21,6 +22,7 @@ from pipenv.cli.options import (
     uninstall_options,
     verbose_option,
 )
+from pipenv.utils.dependencies import get_lockfile_section_using_pipfile_category
 from pipenv.utils.environment import load_dot_env
 from pipenv.utils.processes import subprocess_run
 from pipenv.vendor.click import (
@@ -779,11 +781,11 @@ def requirements(
         echo(" ".join([prefix, package_index["url"]]))
 
     deps = {}
-    categories_list = categories.split(",") if categories else []
+    categories_list = re.split(r", *| ", categories) if categories else []
 
     if categories_list:
         for category in categories_list:
-            category = category.strip()
+            category = get_lockfile_section_using_pipfile_category(category.strip())
             deps.update(lockfile.get(category, {}))
     else:
         if dev or dev_only:

pipenv/cli/options.py

@@ -1,4 +1,5 @@
 import os
+import re
 
 from pipenv.project import Project
 from pipenv.utils.internet import is_valid_url
@@ -235,7 +236,7 @@ def categories_option(f):
     def callback(ctx, param, value):
         state = ctx.ensure_object(State)
         if value:
-            for opt in value.split(" "):
+            for opt in re.split(r", *| ", value):
                 state.installstate.categories.append(opt)
         return value
 

tests/integration/test_install_categories.py

@@ -18,7 +18,8 @@ def test_basic_category_install(pipenv_instance_private_pypi):
 
 @pytest.mark.categories
 @pytest.mark.install
-def test_multiple_category_install(pipenv_instance_private_pypi):
+@pytest.mark.parametrize('categories', ["prereq other", "prereq, other"])
+def test_multiple_category_install(pipenv_instance_private_pypi, categories):
     with pipenv_instance_private_pypi() as p:
         c = p.pipenv('install six --categories="prereq other"')
         assert c.returncode == 0