
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a statement that creates an empty dictionary.
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- What will be displayed after the following code executes? (Note: the order of the display of entries in a dictionary are not in a specific order.)arrow_forwardImplement the following: Given: person = {'name': 'bob'}1) Add the key/value pair 'emplStatus': 'Retired' to the dictionary person.2) Access the values in the dictionary person to print the following. Example OutputBob's employment status is Retired. NEED HELP WITH PYTHONarrow_forwardThis code is a part of a C dictionary. Please write the code for the below requirements. dict_get Next, you will implement: char* dict_get (const dict_t* dict, const char* key); This function goes through the list given by dict. If you use the above structure, this means starting at el = dict->head and checking each time whether the key at el is key; if it is not, we set el = el->next, until either key is found, or we reach el == NULL. To compare key with el->key, we need to compare one by one each character in key with those in el->key. Remember that strings in C are just pointers (memory addresses) to the first character in the string, so comparing el->key == key will not do what you want. So how do you even get the length of a string s? You would start at memory location s and advance as long as the byte at s (i.e. *s) is not the end-of-string marker (\0, the NULL character). This can get a bit messy, so luckily, you are allowed to use the string comparison…arrow_forward
- Write code that iterates through a dictionary represented by the variable my_dict and prints any values (not keys!) associated with keys beginning with the letter "k" (lowercase).arrow_forwardThis section has been set as optional by your instructor. OBJECTIVE: Write a program in Python that prints the middle value of a dictionary's values, using test_dict from the test_data.py module. NOTE: test_dict is created & imported from the module test_data.py into main.py Example 1: test dict = {'a':1,'b':9,'c':2,'d':5} prints 5 Example 2: test_dict = {'b':9,'d':5} prints 5 Hint: You may(or may not) find the following function useful: list.sort() which sorts the elements in a list. Note: the result is automatically stored in the original list, and return value from the function is None Туре list = [1, 2,3,2,1] After calling: list = [1,1,2,2,3] list.sort(), 339336.2266020 x3zgy7 LAB 13.11.1: Middlest Value (Structured Types) АCTIVITY 0/11 File is marked as read only Current file: test_data.py 1 #This module creates the test_dict to be used in main.py 2 #Reads input values from the user & places them into test_dict 3 dict_size = int(input()) #Stores the desired size of test_dict. 4…arrow_forwardAssuming food is a Dictionary, what does the following statement do? food[101] = "Cheesburger"; Question 63 options: a) After the statement executes, the Dictionary will have an element with the key 101 and the value “Cheeseburger.” b) After the statement executes, the Dictionary will have an element with the key “Cheeseburger” and the value 101 c) After the statement executes, the element at position 101 will have the key “Cheeseburger.” d) After the statement executes, the Dictionary will have 101 elements, each with the key “Cheeseburger.”arrow_forward
- Assume the variable definitions references a dictionary. Write an if statement that determines whether the key 'marsupial' exists in the dictionary. If so, delete 'marsupial' and its associated value. If the key is not in the dictionary, display a message indicating so.arrow_forwardCreates and returns a mutable dictionary, initially giving it enough allocated memory to hold a given number of entries.arrow_forwardCode in pyhton. 2.Assume the following list exists: numbers = [1, 2, 3, 4, 5] Write a statement that uses a dictionary comprehension to create a dictionary in which each element contains a number from the numbers list as its key, and the product of that number times 10 as its value. In other words, the dictionary should contain the following elements: {1: 10, 2: 20, 3: 30, 4: 40, 5: 50}arrow_forward
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