Variables

Tutorials 
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Splitting long varables	>>> l = ("abcdefghijklmnopqrs"  ...      "tuvqxyz")  >>> l  'abcdefghijklmnopqrstuvqxyz'  >>>
Ways of swapping	# Why Python Is Great:  # In-place value swapping    # Let's say we want to swap  # the values of a and b...  a = 23  b = 42    # The "classic" way to do it  # with a temporary variable:  tmp = a  a = b  b = tmp    # Python also lets us  # use this short-hand:  a, b = b, a
"is" vs "=="	>>> a = [1, 2, 3]  >>> b = a    >>> a is b  True  >>> a == b  True    >>> c = list(a)    >>> a == c  True  >>> a is c  False    # • "is" expressions evaluate to True if two   #   variables point to the same object    # • "==" evaluates to True if the objects   #   referred to by the variables are equal
Listing global and local variables	>>> globals()  {'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <class '_frozen_importlib.BuiltinImporter'>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, 'a': 'apple'}  >>> locals()  {'__name__': '__main__', '__doc__': None, '__package__': None, '__loader__': <class '_frozen_importlib.BuiltinImporter'>, '__spec__': None, '__annotations__': {}, '__builtins__': <module 'builtins' (built-in)>, 'a': 'apple'}  >>>