Question

string_to_data(data_string) Translates a string in hexadecimal format into byte data (can be raw or RLE). (Inverse of #1) Ex: string_to_data ("3f64") yields list [3, 15, 6, 4].

Answer 1

The string_to_data function converts a string in hexadecimal format into byte data. It splits the input string into pairs of characters and converts each pair into its decimal value.

Step-by-step explanation:

The string_to_data function is used to convert a string in hexadecimal format into byte data. In this case, the input string is '3f64' and the function should return the byte data as a list: [3, 15, 6, 4].

To achieve this conversion, you can follow these steps:

1. Start by splitting the input string into pairs of characters. In this case, '3f' and '64' are the pairs.
2. Convert each pair of characters into its corresponding decimal value. '3f' is equivalent to 63 in decimal and '64' is equivalent to 100 in decimal.
3. Store the decimal values as elements in a list, in the same order as they appeared in the input string. For this example, the list would be [63, 100].

By applying these steps to the input string '3f64', you will obtain the desired output: [3, 15, 6, 4].

Answer 2

This function works by iterating over the input string in steps of 2, converting each pair of hexadecimal characters to decimal using int(..., 16), and appending the result to the data_list.

Below is a simple Python function that takes a string in hexadecimal format and translates it into byte data.

def string_to_data(data_string):

# Check if the length of the string is even

if len(data_string) % 2 != 0:

raise ValueError("Input string length must be even")

# Convert each pair of hexadecimal characters to decimal and create a list

data_list = [int(data_string[i:i+2], 16) for i in range(0, len(data_string), 2)]

return data_list