Conform the tutorial to the code at the beginning

docs/tutorial.rst

@@ -94,13 +94,20 @@ of default parameters that we can use when creating tasks.
 
     from datetime import datetime
 
-    args = {
+    default_args = {
         'owner': 'airflow',
         'depends_on_past': False,
-        'start_date': datetime(2015, 1, 1),
-        'email': ['airflow@airflow.com',],
-        'email_on_failure': True,
-        'email_on_retry': True,
+        'start_date': datetime(2015, 6, 1),
+        'email': ['airflow@airflow.com'],
+        'email_on_failure': False,
+        'email_on_retry': False,
+        'retries': 1,
+        'retry_interval': timedelta(minutes=5),
+        # 'queue': 'bash_queue',
+        # 'pool': 'backfill',
+        # 'priority_weight': 10,
+        # 'schedule_interval': timedelta(1),
+        # 'end_date': datetime(2016, 1, 1),
     }
 
 For more information about the BaseOperator's parameters and what they do,
@@ -137,7 +144,6 @@ instantiated from an operator is called a constructor. The first argument
 
     t2 = BashOperator(
         task_id='sleep',
-        email_on_failure=False,
         bash_command='sleep 5',
         dag=dag)
 
@@ -241,20 +247,28 @@ something like this:
     """
     from airflow import DAG
     from airflow.operators import BashOperator
-    from datetime import datetime
+    from datetime import datetime, timedelta
 
 
     default_args = {
         'owner': 'airflow',
         'depends_on_past': False,
-        'start_date': datetime(2015, 1, 1),
+        'start_date': datetime(2015, 6, 1),
         'email': ['airflow@airflow.com'],
         'email_on_failure': False,
         'email_on_retry': False,
+        'retries': 1,
+        'retry_interval': timedelta(minutes=5),
+        # 'queue': 'bash_queue',
+        # 'pool': 'backfill',
+        # 'priority_weight': 10,
+        # 'schedule_interval': timedelta(1),
+        # 'end_date': datetime(2016, 1, 1),
     }
 
     dag = DAG('tutorial', default_args=default_args)
 
+    # t1, t2 and t3 are examples of tasks created by instatiating operators
     t1 = BashOperator(
         task_id='print_date',
         bash_command='date',
@@ -262,7 +276,6 @@ something like this:
 
     t2 = BashOperator(
         task_id='sleep',
-        email_on_failure=False,
         bash_command='sleep 5',
         dag=dag)
 
@@ -277,7 +290,7 @@ something like this:
     t3 = BashOperator(
         task_id='templated',
         bash_command=templated_command,
-        params={'my_param': 'Parameter I passed in'},
+        params={'my_param': 'Paramater I passed in'},
         dag=dag)
 
     t2.set_upstream(t1)