Python program to convert a byte string to a list of integers

We have to convert a byte string to a list of integers extracts the byte values (ASCII codes) from the byte string and stores them as integers in a list. For Example, we are having a byte string s=b"Hello" we need to write a program to convert this string to list of integers so the output should be s=[72,101,108,108,111].

Using a Simple list() Conversion

Byte string is already a sequence of integers (where each byte is an integer between 0 and 255) we can directly convert the byte string to a list of integers using list().

# Byte string
s = b"Hello"

# Convert to a list of integers
int_l = list(s)

print(int_l)  

[72, 101, 108, 108, 111]

Explanation:

• Variable s is a byte string (b"Hello") where each character is represented by its corresponding byte value.
• list(s) converts the byte string into a list of integers where each byte is represented by its ASCII value: [72, 101, 108, 108, 111]

Using a List Comprehension

We can also use a list comprehension to iterate over the byte string and get a list of integers.

# Byte string
s = b"Hello"

# Convert to a list of integers using list comprehension
int_l = [byte for byte in s]

print(int_l) 

[72, 101, 108, 108, 111]

Explanation:

• Variable s holds a byte string (b"Hello"), where each character is represented as a byte (ASCII value).
• List comprehension [byte for byte in s] iterates over the byte string, converting each byte into its integer value and storing them in the list: [72, 101, 108, 108, 111].