Fix "end" option in print func (#90)

* Fix "end" option

Fix line 190 to 193.
The print function corrected the end option not applied.
Added code performed when "end" value of parameter "kwargs" is not "nil".

* Fix "end" option

Fix line 190 to 193.
The print function corrected the end option not applied.
Added code performed when "end" value of parameter "kwargs" is not "nil".

* add "end" option test

add "end" option test
in line 312

* add "end" option test


add "end" option test

add "end" option test
in line 312

Author: Sungmin-Joo

builtin/builtin.go

@@ -187,6 +187,10 @@ func builtin_print(self py.Object, args py.Tuple, kwargs py.StringDict) (py.Obje
 		return nil, err
 	}
 	sep := sepObj.(py.String)
+
+	if kwargs["end"] != nil {
+		endObj = kwargs["end"]
+	}
 	end := endObj.(py.String)
 
 	write, err := py.GetAttrString(file, "write")

builtin/tests/builtin.py

@@ -309,6 +309,12 @@ def gen2():
 with open("testfile", "r") as f:
     assert f.read() == "1,2,3,\n"
 
+with open("testfile", "w") as f:
+    print("hello",sep="",end="123", file=f)
+
+with open("testfile", "r") as f:
+    assert f.read() == "hello123"
+    
 doc="round"
 assert round(1.1) == 1.0