readline0 1.3

Pure Python, relatively-efficient reading of null-terminated lines

Read lines of data with an arbitrary delimiter, like a null, newline or even an x.

It passes pylint, passes pycodestyle, passes pydocstyle, is thoroughly unit tested, and runs on CPython 2.7, CPython 3.x, Pypy 7.3.1, Pypy3 7.3.1.

It gains a lot of speed by eschewing single-character reads.

Usage looks like: $ /usr/local/cpython-3.6/bin/python3 Python 3.6.0 (default, Apr 22 2017, 09:17:19) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information.

import readline0 file_ = open('/etc/shells', 'r') for line in readline0.readline0(file_=file_, separator=b' '): ... print(line) ... b'# /etc/shells: valid login shells' b'/bin/sh' b'/bin/dash' b'/bin/bash' b'/bin/rbash'

Of course separator need not be a newline; it defaults to a null byte.