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.

We often use **`binascii.rlecode_hqx`** to perform binhex4 style RLE-compression on the data. It utilizes a simple mechanism to compress the data. 

Given an input, say "Helloooooooo", the function iterates through the string to check for consecutive characters. In this case, there are 8 consecutive "o's". The function will compress this and show the output with a single `o` followed by `\x90\x` and then number of times it occurred. This function is the opposite of rledecode_hqx() method.   

> The compression only occurs if the consecutive characters are greater than or equal to 4. 
 





## Syntax
```    
binascii.rlecode_hqx(data)
```
## Code
Let's work through a few examples of `binascii.rlecode_hqx`. In this example, we use 'HelloooooooWWWWWWorldddd' as an input to the `rlecode_hqx` method. 

Given this input:
1. There are 7 consecutive o's
2. There are 6 consecutive W's
3. There are 6 consecutive d's

The output will contain the following features:

1. The output gives the `Hello-first` occurrence of `o` followed
by the count 07. 

2. The output gives the `W-first` occurrence of `W` followed
by the count 06. 

3. The output gives the `orld-first` occurrence of `d` followed
by the count 04. 


import binascii
# Given this input:
# there are 7 consecutive o's.
# there are 6 consecutive W's.
# there are 6 consecutive d's.


rle = binascii.rlecode_hqx(b'HelloooooooWWWWWWorldddd')
print(rle)

# The output gives the Hello-first occurence of o followed
# by the count 07. 

# The output gives the W-first occurence of W followed
# by the count 06. 

# The output gives the orld-first occurence of d followed
# by the count 04. 


# in this example, compression does not occur as 4-rule
# is not applied
rle1 = binascii.rlecode_hqx(b'Welcome')
print(rle1)

What is binascii.rlecode_hqx in Python?

Syntax

Code