Inception in Python

inception.py

def inception(target_depth, current_depth=0, going_deeper=True):
    if going_deeper == True:
        if current_depth < target_depth:
            current_depth += 1
            if current_depth != target_depth:
                print("Dream Level: {0}, going deeper..".format(current_depth))
            elif current_depth == target_depth:
                print("Dream Level: {0}, coming back up..".format(current_depth))
            return inception(target_depth, current_depth, True)
        elif current_depth == target_depth:
            return inception(target_depth, current_depth, False)
    elif going_deeper == False:
        current_depth -= 1
        if current_depth != 0:
            print("Dream Level: {0}, coming back up..".format(current_depth))
            return inception(target_depth, current_depth, False)
        if current_depth == 0:
            print("No dream level, back at reality.")
            return

print("")
inception(4)
print("")

Example output:

Dream Level: 1, going deeper..
Dream Level: 2, going deeper..
Dream Level: 3, going deeper..
Dream Level: 4, coming back up..
Dream Level: 3, coming back up..
Dream Level: 2, coming back up..
Dream Level: 1, coming back up..
No dream level, back at reality.