Merge pull request #6047 from oliver-sanders/6041

tutorial: make the tutorial workflow run a little slower

cylc/flow/etc/tutorial/cylc-forecasting-workflow/bin/consolidate-observations

@@ -115,4 +115,5 @@ def main():
 
 
 if __name__ == '__main__':
+ util.sleep()
  main()

cylc/flow/etc/tutorial/cylc-forecasting-workflow/bin/forecast

@@ -242,6 +242,7 @@ def main(forecast_interval, forecast_iterations):
 
 
 if __name__ == '__main__':
+ util.sleep()
  try:
  args = [int(sys.argv[1]), int(sys.argv[2])]
  except IndexError:

cylc/flow/etc/tutorial/cylc-forecasting-workflow/bin/get-observations

@@ -40,6 +40,8 @@ import re
 
 import requests
 
+import util
+
 
 BASE_URL = ('http://datapoint.metoffice.gov.uk/public/data/'
  'val/wxobs/all/json/{site_id}'
@@ -215,5 +217,6 @@ def main(site_id, api_key=None):
 
 
 if __name__ == '__main__':
+ util.sleep()
  main(os.environ['SITE_ID'],
  os.environ.get('API_KEY'))

cylc/flow/etc/tutorial/cylc-forecasting-workflow/bin/get-rainfall

@@ -195,4 +195,5 @@ def main():
 
 
 if __name__ == '__main__':
+ util.sleep(2) # make the tutorial run a little slower
  main()

cylc/flow/etc/tutorial/cylc-forecasting-workflow/bin/post-process

@@ -101,6 +101,7 @@ def main(site_name, time):
 
 
 if __name__ == '__main__':
+ util.sleep()
  try:
  args = (sys.argv[1].lower(), int(sys.argv[2]))
  except IndexError:

cylc/flow/etc/tutorial/cylc-forecasting-workflow/lib/python/util.py

@@ -21,9 +21,11 @@
 from copy import copy
 from contextlib import suppress
 import math
-import jinja2
+import os
 import sys
+import time
 
+import jinja2
 
 R_0 = 6371. # Radius of the Earth (km).
 
@@ -301,3 +303,12 @@ def generate_html_map(filename, template_file, data, domain, resolution):
  lat2=domain['lat2'],
  data=data
  ))
+
+
+def sleep(secs=4):
+ """Make the tutorials run a little slower so users can follow along.
+
+ (Only if not running in CI).
+ """
+ if 'CI' not in os.environ:
+ time.sleep(secs)

cylc/flow/etc/tutorial/runtime-tutorial/flow.cylc

@@ -1,6 +1,7 @@
 #!jinja2
 [scheduler]
  UTC mode = True
+ allow implicit tasks = True # TODO: remove at end of exercise
 
 [scheduling]
  # TODO: Set initial cycle point