fix #28, e.g. print issue

Author: AndreasGocht

scorep/__main__.py

@@ -47,7 +47,7 @@ def set_init_environment(scorep_config=[], keep_files=False):
 
     preload_str = scorep_ld_preload + " " + subsystem_lib_name
     if "LD_PRELOAD" in os.environ:
-        print("LD_PRELOAD is already specified. If Score-P is already loaded this might lead to errors.", file=sys.stderr)
+        sys.stderr.write("LD_PRELOAD is already specified. If Score-P is already loaded this might lead to errors.")
         preload_str = preload_str + " " + os.environ["LD_PRELOAD"]
     os.environ["LD_PRELOAD"] = preload_str
     os.environ["SCOREP_PYTHON_BINDINGS_INITALISED"] = "true"
@@ -161,4 +161,4 @@ def main(argv=None):
     scorep_main()
 else:
     if ("SCOREP_PYTHON_BINDINGS_INITALISED" not in os.environ) or (os.environ["SCOREP_PYTHON_BINDINGS_INITALISED"] != "true"):
-        print("scorep needs to be loaded using \"python -m scorep <script>\". Please be aware that scorep might not work correctly!", file=sys.stderr)
+        sys.stderr.write("scorep needs to be loaded using \"python -m scorep <script>\". Please be aware that scorep might not work correctly!")

scorep/subsystem.py

@@ -60,7 +60,7 @@ def generate(scorep_config, keep_files=False):
 
     temp_dir = tempfile.mkdtemp(prefix="scorep.")
     if keep_files:
-        print("Score-P files are keept at: {}".format(temp_dir), file=sys.stderr)
+        sys.stderr.write("Score-P files are keept at: {}".format(temp_dir), file=sys.stderr)
 
     with open(temp_dir + "/scorep_init.c", "w") as f:
         f.write(scorep_adapter_init)