Recursion - when a function calls itself
Functions, Modules and Packages example from a Well House Consultants training course
More on Functions, Modules and Packages [link]
Source code: recur.py Module: Y105
"Example of recursion"
if x == 1: return 1
else: return x + trinumber(x-1)
print("sum of single digits:",trinumber(9))
""" Sample Oututs
WomanWithCat:y105 grahamellis$ python3 recur.py
sum of single digits: 45
WomanWithCat:y105 grahamellis$ python2 recur.py
('sum of single digits:', 45)
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