Explain the above Python code line by line, give examples to its function.

1 colors = ["Red', 'Blue', 'Green', 'Yellow', 'Black'] 2 3 states = ['Andhra', 'Karnataka', 'TamilNadu', 'Kerala'] 4 5 5 = neighbors = () neighbors['Andhra'] ['Karnataka', 'TamilNadu'] 7 neighbors["Karnataka'] = ['Andhra', 'TamilNadu', 'Kerala'] neighbors['TamilNadu'] ['Andhra', 'Karnataka', 'Kerala'] neighbors['Kerala'] [Karnataka', 'TamilNadu'] 9 19 colors_of_states = {} 12 13 14 15 def promising (state, color): for neighbor in neighbors.get(state): color_of_neighbor = colors_of_states.get(neighbor) if color_of_neighbor == color: return false 16 17 19 return True 29 21 22 def get_color_for_state(state): for color in colors: if promising(state, color): return color 23 24 25 26 27 def main(): for state in states: colors_of_states[state] 28 get_color_for_state(state) 29 30 print colors_of_states 31 32 33 main()