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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    Python sets are very much like mathematical sets, and support operations like set intersection and union. Python also features a frozenset class for immutable sets, see Collection types. Dictionaries (class dict) are mutable mappings tying keys and corresponding values. Python has special syntax to create dictionaries ({key: value})

  3. pytest - Wikipedia

    en.wikipedia.org/wiki/Pytest

    Fixtures practically constitute the arrange phase in the anatomy of a test (AAA, short for arrange, act, assert). [11] [10] Pytest fixtures can run before test cases as setup or after test cases for clean up, but are different from unittest and nose (another third-party Python testing framework)'s setups and teardowns.

  4. Associative array - Wikipedia

    en.wikipedia.org/wiki/Associative_array

    Another very simple implementation technique, usable when the keys are restricted to a narrow range, is direct addressing into an array: the value for a given key k is stored at the array cell A[k], or if there is no mapping for k then the cell stores a special sentinel value that indicates the lack of a mapping. This technique is simple and ...

  5. From frozen waffles to onions: How recent recalls highlight ...

    www.aol.com/news/frozen-waffles-onions-recent...

    From E. coli traced to slivered onions on McDonald's Quarter Pounders to mass recalls of frozen waffles due to listeria risk, foodborne illness seems ever-present in the headlines.

  6. Hash table - Wikipedia

    en.wikipedia.org/wiki/Hash_table

    In computing, a hash table is a data structure that implements an associative array, also called a dictionary or simply map; an associative array is an abstract data type that maps keys to values. [2] A hash table uses a hash function to compute an index, also called a hash code, into an array of buckets or slots, from which the desired value ...

  7. Man 'Downgrades' Sister-in-Law's Christmas Gift After Seeing ...

    www.aol.com/man-downgrades-sister-laws-christmas...

    As the band is sized, the man ordered a wrist-sizer and a photo of the band itself, putting it inside "a comically big box" so she would have something to open. "She loved the style and color I ...

  8. Kanye West accused of sexually assaulting model on music ...

    www.aol.com/kanye-west-accused-sexually...

    Ye, the rapper formerly known as Kanye West, is being accused of sexual assault in a lawsuit that alleges he strangled a model on a music video set in 2010 and shoved his fingers in her mouth in ...

  9. pandas (software) - Wikipedia

    en.wikipedia.org/wiki/Pandas_(software)

    By default, a Pandas index is a series of integers ascending from 0, similar to the indices of Python arrays. However, indices can use any NumPy data type, including floating point, timestamps, or strings. [4]: 112 Pandas' syntax for mapping index values to relevant data is the same syntax Python uses to map dictionary keys to values.