Merge pull request #3 from NCAR/hua-work-template

format code with 3 leading spaces

Author: zaihuaji

tests/test_hello_world.py

@@ -4,8 +4,8 @@
 from src.rda_python_template.hello_world import get_string
 
 def test_get_string():
-    assert get_string('Bob') == 'Bob: Hello World!'
+   assert get_string('Bob') == 'Bob: Hello World!'
 
 def test_raises_exception_on_non_string_arguments():
-    with pytest.raises(TypeError):
-        get_string(9)
+   with pytest.raises(TypeError):
+      get_string(9)