How can you return the binary code for an integer?

To obtain the binary representation of an integer in Python, you can use the following methods:

1. The bin() function.
2. The string method .format() with the 'b' specifier.
3. Bitwise operations (for manual conversion).

Examples:

# Using the bin() function
number = 10
binary_representation_bin = bin(number)
print(binary_representation_bin) # Output: 0b1010

# Using the .format() method
number = 10
binary_representation_format = "{:b}".format(number)
print(binary_representation_format) # Output: 1010

# Using f-strings (similar to .format())
number = 10
binary_representation_fstring = f"{number:b}"
print(binary_representation_fstring) # Output: 1010

The difference between bin() and .format()/f-strings is that bin() adds the prefix "0b" to the result, while .format() and f-strings return a plain binary string. The choice of method depends on the required output format.

Manual conversion using bitwise operations:

# Manual conversion using bitwise operations
def int_to_binary_manual(n):
    if n == 0:
        return "0"
    binary = ""
    while n > 0:
        binary = str(n % 2) + binary  # Remainder of division by 2
        n = n // 2                  # Integer division by 2
    return binary

number = 10
binary_representation_manual = int_to_binary_manual(number)
print(binary_representation_manual) # Output: 1010

This manual method demonstrates the conversion logic, but in real development, it is preferable to use the built-in bin() function or the .format() method for efficiency and readability.