Chapter 9

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Across
  1. 5. The various types of values that can be stored in a dictionary, including integers, floats, strings, lists, tuples, and even other dictionaries
  2. 7. The method of accessing the value associated with a specific key in a dictionary using square brackets.
  3. 8. The specific way of writing code to initialize and define a set in Python, using curly braces {}.
  4. 9. returns a view object containing the keys in a dictionary.
  5. 16. The way to create a dictionary without any initial key-value pairs.
  6. 18. removes and returns the value associated with a specified key in a dictionary
  7. 20. A built-in function in Python used to open a file for reading, writing, or appending.
  8. 23. A keyword in Python used to delete a key-value pair from a dictionary.
  9. 24. An unordered collection of unique elements in Python, represented by curly braces {}.
  10. 26. A method in the json module used to serialize a Python object to a JSON formatted string and write it to a file.
  11. 29. A set operation in Python that returns a new set containing elements present in either of the sets, but not in both.
  12. 30. A Python data structure that stores a collection of key-value pairs, allowing efficient retrieval and modification of values based on their associated keys.
  13. 31. The built-in function len to get the number of elements in a set.
  14. 34. A set operation in Python that combines two sets, returning a new set containing all unique elements from both sets.
  15. 35. The unique identifier in a dictionary that is used to access and retrieve the associated value.
  16. 36. A built-in function in Python that returns the number of items (key-value pairs) in a dictionary.
  17. 37. A comparison in Python to check if set2 is a subset of set1
  18. 38. A concise way of creating sets in Python using a single line of code, similar to list and dictionary comprehensions.
  19. 39. Membership operators in Python used to check whether an element is present (in) or not present (not in) in a set.
Down
  1. 1. The process of adding and removing elements from a set using the add and remove methods.
  2. 2. A method used to close an open file in Python after performing file operations.
  3. 3. The process of adding new key-value pairs to a dictionary using the assignment operator.
  4. 4. A method in the json module used to read a JSON formatted string from a file and deserialize it into a Python object
  5. 6. The inclusion of a condition in a dictionary comprehension to filter items based on a specific criterion.
  6. 10. The specific way of writing code to initialize and define a dictionary in Python, using curly braces {} and separating key-value pairs with colons.
  7. 11. returns a view object containing the key-value pairs as tuples in a dictionary.
  8. 12. Membership operators in Python used to check whether a key is present (in) or not present (not in) in a dictionary.
  9. 13. Methods in Python used to check if one set is a subset or superset of another set.
  10. 14. returns a view object containing the values in a dictionary
  11. 15. A set operation in Python that returns a new set containing common elements from two sets.
  12. 17. A concise way of creating dictionaries in Python using a single line of code, often with the inclusion of a conditional statement.
  13. 19. A method in Python that removes and returns the last key-value pair from a dictionary as a tuple
  14. 21. Another way to perform the union of two sets in Python, using the | operator.
  15. 22. The data associated with a key in a dictionary. It can be of any data type, such as integers, strings, lists, or other dictionaries.
  16. 25. A method in Python that removes all key-value pairs from a dictionary, leaving it empty.
  17. 27. used to retrieve the value associated with a key from a dictionary, with the option to provide a default value if the key is not found.
  18. 28. The process of converting a Python object into a format suitable for storage or transmission.
  19. 32. A comparison in Python to check if set1 is a superset of set2.
  20. 33. A set operation in Python that returns a new set containing elements present in the first set but not in the second set.