cals = {"Beans":150, "Spam":350, "Egg":200} total_cals = count = print(total_cals/count)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Fill in the first blank to compute the total number of calories for all items on the menu and fill in the 2nd blank to compute the number of items on the menu:

This Python code snippet demonstrates how to calculate the average caloric content of several food items stored in a dictionary.

```python
cals = {"Beans": 150, "Spam": 350, "Egg": 200}
total_cals = ___________________
count = ___________________
print(total_cals/count)
```

### Explanation:

1. **Dictionary `cals`:**
   - The variable `cals` is a dictionary where each key represents a food item, and each associated value represents the caloric content of that item.
   - Example entries:
     - "Beans" has 150 calories
     - "Spam" has 350 calories
     - "Egg" has 200 calories

2. **Calculating `total_cals`:**
   - `total_cals` should represent the sum of all the caloric values in the dictionary.

3. **Calculating `count`:**
   - The variable `count` represents the number of items in the dictionary.

4. **Printing the Average:**
   - The statement `print(total_cals/count)` outputs the average caloric content of the items, calculated by dividing `total_cals` by `count`.

### Tasks for Completion:
- Replace the underscores `___________________` with appropriate expressions to calculate the total calories and count of items.
  
This exercise is useful for learning about data structures, particularly dictionaries, in Python, as well as basic arithmetic operations.
Transcribed Image Text:This Python code snippet demonstrates how to calculate the average caloric content of several food items stored in a dictionary. ```python cals = {"Beans": 150, "Spam": 350, "Egg": 200} total_cals = ___________________ count = ___________________ print(total_cals/count) ``` ### Explanation: 1. **Dictionary `cals`:** - The variable `cals` is a dictionary where each key represents a food item, and each associated value represents the caloric content of that item. - Example entries: - "Beans" has 150 calories - "Spam" has 350 calories - "Egg" has 200 calories 2. **Calculating `total_cals`:** - `total_cals` should represent the sum of all the caloric values in the dictionary. 3. **Calculating `count`:** - The variable `count` represents the number of items in the dictionary. 4. **Printing the Average:** - The statement `print(total_cals/count)` outputs the average caloric content of the items, calculated by dividing `total_cals` by `count`. ### Tasks for Completion: - Replace the underscores `___________________` with appropriate expressions to calculate the total calories and count of items. This exercise is useful for learning about data structures, particularly dictionaries, in Python, as well as basic arithmetic operations.
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