FAQ: Trees: Python - Trees Introduction

Frequently Asked Questions Python FAQ
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This community-built FAQ covers the “Trees Introduction” exercise from the lesson “Trees: Python”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Computer Science

Complex Data Structures

FAQs on the exercise Trees Introduction

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Took me well over an hour to understand the repr function to print the tree. Didn’t know functions could call themselves like that… I guess my segway into recursion was worth it

def repr(self, level=0):

# HELPER METHOD TO PRINT TREE!

ret = "--->" * level + repr(self.value) + "\n"

for child in self.children:

  ret = ret + child.__repr__(level+1) 

return ret