Add src and tests directory and Make module file

Author: Guyunjeong

projects/Calculate Age/calculate.py

@@ -47,3 +47,5 @@ def month_days(month, leap_year):
 day = day + localtime.tm_mday
 print("%s's age is %d years or " % (name, year), end="")
 print("%d months or %d days" % (month, day))
+
+

projects/Calculate Age/src/__init__.py

@@ -17,4 +17,5 @@ def test_month_days():
     assert month_days(1, False) == 31
     assert month_days(11, True) == 30
 
-# "pytest -s test_calculate.py" to test this file
+# "pytest -s test_calculate.py" to test this file
+