To do this assigment, you will need to look in the Python builtin types docs for strings. Also, look at sequences, since a string is a sequence. You will find useful stuff there, too.

A shell Python program is provided in the navigation area. Download it and save it with your Python programs. Then, open it with VSCode.

Here is a solution to the example Problem 0. with one test case. You should try a couple of cases that might break your solution.

###############Problem 0#################
#   Example problem to show how this works.
#   arg is a lower-case string with at least two instances
#   of the letter q
#   Find the substring of arg between the first and last q
#########################################

arg = "quoque"
start = arg.find("q")
end = arg.rfind("q")
my_result = arg[start + 1: end]
result = "uo"  ##this is my given result
print(result == my_result)  ##prints True if you succeeded.

Here is where you need to exercise care and do a little testing. I should be able to change the variable (arg here) to any string that has at least two instances of the letter q and the print statement should print True. So, check for this by changing your input variable.