The **`binascii`** is a widely used Python library for ASCII-encoded binary representations. It contains several methods for converting to binary from ASCII or hex, and vice versa.

**`binascii.crc_hqx`** computes the 16-bit CRC value of the provided data. It takes an initial CRC (in the binhex4 format) as one of the parameters.
> Often the initial CRC is taken as 0. 

The method makes use of the CRC-CCITT polynomial:

$x^{16}$ +  $x^{12}$ + $x^{5}$ + ${1}$




## Syntax
```
binascii.crc_hqx (data, crc)
// data is the string to be encoded.
// crc is the initial crc value. Often taken as zero. 
```
## Code
Let’s work through a few coding examples using `crc_hqx`.

> In these examples, the `b(string)` means that the string is in bytes form. 





import binascii

# compute crc of a few string. Initial parameter is taken as 0. 
crc = binascii.crc_hqx(b"Hello World", 0)
print(crc)

crc = binascii.crc_hqx(b"Welcome", 0)
print(crc)

# let's use the crc calculated above as parameter
crc = binascii.crc_hqx(b"Welcome to Educative", crc)
print(crc)


What is binascii.crc_hqx in Python?

Syntax

Code