Python .b2a_qp()

The .b2a_qp() function encodes binary data using the quoted-printable transfer encoding and returns a bytes object containing only ASCII characters.

Syntax

binascii.b2a_qp(data, quotetabs=false, istext=false, header=false)

Parameters:

• data: The binary data to encode. Must be a bytes or bytearray object.
• quotetabs (optional, default = False): When True, spaces and tabs are always encoded. By default, they’re encoded only when necessary according to the quoted-printable rules.
• istext (optional, default = False): When True, the input is treated as text and line endings are converted to \r\n. When False, line endings are not altered.
• header (optional, default = False): When True, spaces are encoded as underscores, making the output suitable for email headers (RFC 2047 format).

Return value:

Returns a bytes object containing the quoted-printable encoded ASCII representation of the input data.

Example

This example demonstrates encoding binary data containing special characters into quoted-printable ASCII:

import binascii

# Binary data that includes an equals sign which must be quoted
binary_data = b"Codecademy = Awesome!\n"

# Encode the binary data to Quoted-Printable ASCII
encoded = binascii.b2a_qp(binary_data)

print(encoded)

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This produces output similar to:

b'Codecademy =3D Awesome!=0A'

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Note: To decode quoted-printable data back to binary, use binascii.a2b_qp(data).

Codebyte Example

This example illustrates how .b2a_qp() encodes multiple special characters, tabs, and spaces in a bytes object:

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