fix 'from PikaObj import *' error info

port/linux/package/pikascript/main.py

@@ -1,3 +1,4 @@
+from PikaObj import *
 import PikaStdLib
 import PikaStdData
 import ctypes
@@ -6,3 +7,5 @@ import PikaMath
 import PikaStdDevice
 import test_module1
 import test_cmodule
+
+print('hello pikascript!')

src/PikaParser.c

@@ -1437,6 +1437,12 @@ static char* Parser_PreProcess_from(Args* buffs_p, char* line) {
         alias = class;
     }
 
+    /* skip PikaObj */
+    if (strEqu(module, "PikaObj")){
+        line_out = strsCopy(buffs_p, "");
+        goto exit;
+    }
+
     line_out = strsFormat(&buffs, PIKA_LINE_BUFF_SIZE, "import %s\n%s = %s.%s",
                           module, alias, module, class);
     line_out = strsCopy(buffs_p, line_out);