Priya R Priya R
Updated date Sep 18, 2023
In this blog, we will learn different methods to convert integers to hexadecimal strings in Python.

Introduction:

Hexadecimal representation is a common way to work with binary data and memory addresses in computing. In Python, you might encounter situations where you need to convert an integer to a hexadecimal string. Whether you are dealing with data manipulation or want to display the data in a specific format, understanding how to perform this conversion is essential. In this blog, we will explore various methods to convert an integer to a hexadecimal string in Python. 

Method 1: Using the hex() Function

The built-in way to convert an integer to a hexadecimal string in Python is by using the hex() function. This function takes an integer as its argument and returns a string representing the hexadecimal value.

# Method 1: Using the hex() function
integer_value = 255
hex_string = hex(integer_value)
print("Method 1:", hex_string)

Output:

Method 1: 0xff
  • The hex() function takes the integer 255 as input.
  • It converts the integer to its hexadecimal representation, which is '0xff'.
  • The resulting hexadecimal string is assigned to the variable hex_string.
  • Finally, we print the value of hex_string.

Method 2: Using String Formatting

Another method to convert an integer to a hexadecimal string is by using string formatting. Python provides the format() method, which allows you to specify the format of a value within a string.

# Method 2: Using String Formatting
integer_value = 255
hex_string = '{:X}'.format(integer_value)
print("Method 2:", hex_string)

Output:

Method 2: FF
  • We use the format() method to format the integer 255.
  • {:X} is a formatting specifier that indicates we want to format the value as a hexadecimal number.
  • The resulting hexadecimal string is 'FF'.

Method 3: Using f-strings (Python 3.6 and later)

If you are using Python 3.6 or later, you can use f-strings to achieve the same result in a more concise and readable way.

# Method 3: Using f-strings (Python 3.6 and later)
integer_value = 255
hex_string = f'{integer_value:X}'
print("Method 3:", hex_string)

Output:

Method 3: FF
  • We use an f-string with the formatting specifier {:X} to convert the integer to a hexadecimal string directly.
  • The resulting hexadecimal string is 'FF'.

Method 4: Using Bitwise Operations

You can also convert an integer to a hexadecimal string by using bitwise operations. This method gives you more control over the format and can be useful when dealing with specific bit patterns.

# Method 4: Using Bitwise Operations
integer_value = 255
hex_string = '0x{:X}'.format(integer_value)
print("Method 4:", hex_string)

Output:

Method 4: 0xFF
  • We use string formatting to achieve the conversion, but this time we prepend '0x' to the formatted value.
  • This method ensures that the resulting string includes the '0x' prefix commonly used to indicate hexadecimal values.

Method 5: Using a Custom Function

If you prefer to encapsulate the conversion logic in a custom function for reusability, you can create one that takes an integer as input and returns the corresponding hexadecimal string.

# Method 5: Using a Custom Function
def int_to_hex_string(integer_value):
    return '0x{:X}'.format(integer_value)

integer_value = 255
hex_string = int_to_hex_string(integer_value)
print("Method 5:", hex_string)

Output:

Method 5: 0xFF
  • We define a custom function int_to_hex_string that takes an integer as input and returns the hexadecimal string.
  • Inside the function, we use the same string formatting technique as in Method 4.
  • Finally, we call the custom function with the integer 255 to obtain the hexadecimal string.

Method 6: Using a Lambda Function

For more short code, you can use a lambda function to perform the conversion. Lambda functions are anonymous functions that can be used for simple operations.

# Method 6: Using a Lambda Function
int_to_hex_string = lambda integer_value: '0x{:X}'.format(integer_value)

integer_value = 255
hex_string = int_to_hex_string(integer_value)
print("Method 6:", hex_string)

Output:

Method 6: 0xFF
  • We define a lambda function int_to_hex_string that takes an integer as input and returns the hexadecimal string.
  • The lambda function uses the same string formatting approach as in Method 4 and 5.
  • We call the lambda function with the integer 255 to obtain the hexadecimal string.

Conclusion:

In this blog, we have explored various methods to convert an integer to a hexadecimal string in Python. We covered both built-in functions and custom approaches to suit different preferences and use cases. 

  • Using the hex() Function: The simplest method that directly converts an integer to a hexadecimal string using the hex() function.
  • Using String Formatting: Utilizing the format() method with a formatting specifier to achieve the conversion.
  • Using f-strings (Python 3.6 and later): A short method for Python 3.6 and later versions using f-strings and the formatting specifier.
  • Using Bitwise Operations: A method that includes the '0x' prefix and allows for more control over the format.
  • Using a Custom Function: Creating a custom function to encapsulate the conversion logic for reusability.
  • Using a Lambda Function: Using a lambda function for a concise and functional approach.

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