reading-notes

Pythonisms

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What are Generators

ARTICLES

Dunder Methods Iterators Generators

NOTES

• dunder methods are special methods that are used to implement certain operations on objects

• Dunder Methods
  • __init__ - constructor
  • __repr__ - string representation of the object
  • __str__ - string representation of the object
  • __add__ - addition
  • __sub__ - subtraction
  • __mul__ - multiplication
  • __truediv__ - true division
  • __floordiv__ - floor division
  • __mod__ - modulus
  • __pow__ - power
  • __len__ - length
  • __getitem__ - indexing
  • __setitem__ - assignment
  • __delitem__ - deletion
  • __iter__ - iteration
  • __next__ - iteration
  • __contains__ - membership
  • __call__ - calling
• Iterators are objects that can be iterated upon. An object which will return data, one element at a time.
  • Iterable - an object that can return an iterator
  • Iterator - an object that keeps state and produces the next value when you call next() on it
  • Iteration - taking elements from an object until the elements are finished
  • Iterable - an object that can be iterated over
• Generators are a simple way of creating iterators. All the work we mentioned above are automatically handled by generators in Python. Simply speaking, a generator is a function that returns an object (iterator) which we can iterate over (one value at a time).