Nameerror name d is not defined. Nameerror name is not defined python 3. nameerror: name 'a' is not defined. nameerror: name 'p' is not defined. nameerror: name 'l' is not defined.

Nameerror name d is not defined. Nameerror name is not defined python 3. nameerror: name 'a' is not defined. nameerror: name 'p' is not defined. nameerror: name 'l' is not defined.
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