python loop back to start
def main(): #defines the area in indents that will be triggered with main()# print('hi') yn = input('Wanna loop back to the start? ') if yn = 'yes': main() #loops back to where we defined main# main() #This starts the main loop, without this, main would just be defined but not run#
python for loop start, end
my_list = [1, 2, 3] my_list.reverse() # my_list is modified print(my_list) # '[3, 2, 1]' my_revert = my_list[::-1] # my_list stays [3, 2, 1] print(my_revert) # '[1, 2, 3]' # Item by item reverse with range(<start>, <end>, <step>) for i in range(len(my_list), 0, -1): # my_list is [3, 2, 1] print(my_list[i-1]) # '1' '2' '3' for i in reversed(range(len(my_list))): print(my_list[i]) # '1' '2' '3'
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