The lower() method of bytearray class in Python

Overview:

The lower() method of bytearray class creates a lowercase version of the bytearray contents and returns it. The method does not change the bytearray in-place. A bytearray in Python can hold ASCII and the bytes corresponding to values up-to 255. The uppercase ASCII values are translated to lowercase ones in the new bytearray.

The lower() method of bytearray in Python

If the use case is to get the lowercase copy of a Unicode sequence, the lower() method of the Python string class can be used. A string in Python is a mutable sequence of Unicode codepoints with a specified encoding.

# Example Python program that converts
# a bytearray containing ASCII values to
# corresponding uppercase values

# Create a mutable sequence of ASCII values
buffer = bytearray(b"HOW LONG IS FOREVER")
print(buffer)

# Convert uppercase from lowercase values
translated = buffer.lower()
print(translated)

bytearray(b'HOW LONG IS FOREVER')
bytearray(b'how long is forever')