Allow multi-block expressions in seval (#452)

* Allow multi-line strings in `seval`

* Add test for issue 433

* Fix newline

Author: MilesCranmer

pytest/test_all.py

@@ -17,3 +17,22 @@ def test_issue_394():
     assert jl.f is f
     assert jl.y is y
     assert jl.seval("f(x)") == 4
+
+def test_issue_433():
+    "https://github.com/JuliaPy/PythonCall.jl/issues/433"
+    from juliacall import Main as jl
+
+    # Smoke test
+    jl.seval("x=1\nx=1")
+    assert jl.x == 1
+
+    # Do multiple things
+    out = jl.seval(
+        """
+        function _issue_433_g(x)
+            return x^2
+        end
+        _issue_433_g(5)
+        """
+    )
+    assert out == 25

src/JlWrap/module.jl

@@ -10,7 +10,7 @@ function pyjlmodule_dir(self::Module)
 end
 
 function pyjlmodule_seval(self::Module, expr::Py)
-    Py(Base.eval(self, Meta.parse(strip(pyconvert(String, expr)))))
+    Py(Base.eval(self, Meta.parseall(strip(pyconvert(String, expr)))))
 end
 
 function init_module()