Type the program's output
```
city = 'Hampton'
my_slice = city[0:-4]
print(my_slice)
```
Answer (1)
The program initializes a string 'Hampton', slices it from the beginning up to the index -4, resulting in 'Ham', and prints the sliced string. The length of 'Hampton' is 7, so the slice [0:-4] extracts characters from index 0 up to index 2. The final answer is: $\boxed{Ham}
Explanation
Understanding the Program We are given a Python program that assigns the string 'Hampton' to the variable city . Then, it creates a slice of this string from the beginning (index 0) up to the index -4 (which means 4 characters from the end) and assigns it to the variable my_slice . Finally, the program prints the value of my_slice .
Calculating the Slice The string 'Hampton' has a length of 7. The slice city[0:-4] extracts the substring starting from index 0 up to, but not including, the index -4. Index -4 corresponds to the character 'p' in 'Hampton'. Therefore, the slice will include the characters from index 0 up to index 2.
Determining the Substring The characters at indices 0, 1, and 2 of the string 'Hampton' are 'H', 'a', and 'm', respectively. Thus, the slice city[0:-4] will result in the substring 'Ham'.
Printing the Result The program then prints the value of my_slice , which is 'Ham'.
Examples
String slicing is a fundamental operation in computer science with applications in data processing, text analysis, and bioinformatics. For example, in DNA sequencing, you might need to extract specific segments of a DNA string for analysis. If a DNA sequence is represented as a string 'ATGCGTAG', slicing can be used to isolate a particular gene or regulatory region. Understanding string slicing helps in manipulating and analyzing textual and biological data efficiently.
