The **`quopri.encodestring()`** function in Python performs quoted-printable encoding on data with few non-printable characters.

To use the `quopri.encodestring()` function, the program needs to import the `quopri` module as shown below:
```Python
import quopri
```

* The function accepts a byte source `input` as a non-optional parameter and returns the encoded bytes as the `output`.
* The `quotetabs` parameter accepts a `True` or `False` value. The function encodes spaces and tabs if the `quotetabs` is `True`; otherwise, it leaves them unencoded.
>Note: Tabs and spaces at the end of a line are always encoded.
* The `header` parameter accepts a `True` or `False` value. The function decodes spaces as underscores if the `header` is `True`; otherwise, it leaves them unencoded.
> Note: `quopri.decodestring()` uses `False` as the default value of `header`.

# Explanation
The `quopri.encodestring()` function encodes all  8-bit value characters into a `=` and two hexadecimal digits, with the exception of printable ASCII characters. For example, `=` has a decimal value of 61 and is encoded as `=3D`. 

All ASCII characters with decimal values from 33 to 126, except `=`, are printable and decoded as well as encoded as themselves.

A space with ASCII value 9 and a tab with ASCII value 32 represent themselves in the encoded data. 

# Examples
The following code demonstrates the use of the `quopri.encodestring()` function:

import quopri

#Example 1

#example text
text = 'This text contains ünicöde'

#create input
input1=text.encode('utf-8')

#Encode
output = quopri.encodestring(input1, quotetabs = False)

#get the output
print(output)

#Example 2

input2 = text.encode('utf-8')
output2 = quopri.encodestring(input2, quotetabs = True)
print(output2)

#Example 3

input3 = text.encode('utf-8')
output3 = quopri.encodestring(input3, quotetabs = False, header = True)
print(output3)

The example text contains two non-printable characters and three spaces.


## Example 1
The `quopri.encodestring()` function takes the `quotetabs` parameter as `False` and displays the spaces as themselves as a result. The program encodes Unicode characters *ü* and *ö* as *=C3=BC* and *=C3=B6* respectively.
>Note: `utf-8` encoding of Unicode characters can take up to four bytes.


## Example 2
The `quopri.encodestring()` function takes the `quotetabs` parameter as `False` and encodes the spaces as *=20* as a result.

## Example 3
The `quopri.encodestring()` function takes the `header` parameter as `True` and encodes the spaces as *_* as a result.

How to use quopri.encodestring()  in Python

quopri.encodestring() in Python encodes data using quoted-printable encoding, converting non-printable characters into ASCII.

How to use quopri.encodestring() in Python

Prototype and parameters

Explanation

Examples

Example 1

Example 2

Example 3