Add py. and py.. hooks

Author: jjtolton

resources/clj-kondo.exports/clj-python/libpython-clj/config.edn

@@ -10,7 +10,12 @@
                  libpython-clj.require/require-python
                  hooks.libpython-clj.require.require-python/require-python
                  libpython-clj2.require/require-python
-                 hooks.libpython-clj.require.require-python/require-python}}
+                 hooks.libpython-clj.require.require-python/require-python
+
+                 libpython-clj2.python/py..
+                 hooks.libpython-clj.python.py-dot-dot/py..
+                 libpython-clj2.python/py.
+                 hooks.libpython-clj.python.py-dot-dot/py..}}
 
  :linters
  {:unresolved-namespace

resources/clj-kondo.exports/clj-python/libpython-clj/hooks/libpython_clj/python/py_dot_dot.clj

@@ -0,0 +1,12 @@
+(ns hooks.libpython-clj.python.py-dot-dot
+  (:require [clj-kondo.hooks-api :as api]))
+
+(defn py..
+  "Transform py.. to just evaluate the object, ignoring method/attribute symbols.
+   (py.. obj method arg) -> obj"
+  [{:keys [node]}]
+  (let [children (:children node)
+        obj-node (second children)]
+    (if obj-node
+      {:node obj-node}
+      {:node (api/token-node nil)})))

test/clj_kondo/fixtures/py_dot_test.clj

@@ -0,0 +1,7 @@
+(ns clj-kondo.fixtures.py-dot-test
+  (:require [libpython-clj2.python :refer [py. py..]]))
+
+(defn test-py-dot []
+  (let [obj {:foo "bar"}]
+    (py. obj method arg1 arg2)
+    (py.. obj method1 method2 method3)))

test/clj_kondo/hook_test.clj

@@ -35,3 +35,13 @@
           (str "Found require-python errors in output:\n" output))
       (is (not (has-unresolved-refer-errors? output))
           (str "Found unresolved symbol errors for referred symbols:\n" output)))))
+
+(defn- has-py-dot-errors? [output]
+  (boolean (re-find #"(Unresolved symbol: py\.|unresolved var.*py\.)" output)))
+
+(deftest py-dot-hook-test
+  (testing "py_dot_test.clj - py. and py.. macros"
+    (let [{:keys [out err]} (run-clj-kondo (str fixtures-dir "/py_dot_test.clj"))
+          output (str out err)]
+      (is (not (has-py-dot-errors? output))
+          (str "Found py. related errors in output:\n" output)))))