How can Python output hexadecimal numbers?

In Python, you can use the built-in function hex() to convert an integer to a hexadecimal string representation. Here are some ways to output hexadecimal numbers.

1. converts a value into a hexadecimal string

num = 255
hex_str = hex(num)
print(hex_str)  # 输出：0xff

1. Output the hexadecimal representation using formatted strings.

num = 255
hex_str = f"{num:#x}"
print(hex_str)  # 输出：0xff

1. convert to a specific layout or arrangement

num = 255
hex_str = format(num, 'x')
print(hex_str)  # 输出：ff

Please note that the output of the above methods are all in the form of strings representing hexadecimal values.