######################################################################################
# FOR LOOP
# This is used to repeat code many times and you know how many repetitions are needed.
# There are other ways to use "for". This is perhaps the simplest.
# Use ii instead of i. You can search for ii.
# If you search for i, almost every line of code will match.
# Note the code indentation. This is the spaces preceding the lines of code.  
# Python groups lines of code by indentation.
# Some languages group lines with BEGIN and END.
# Other languages use { and } to group lines of code.
# Python is clean and enforces good code layout by using indentation.
######################################################################################

for ii in range(20):
  print(ii, "Hello World")