file-read-backwards
Memory efficient way of reading files line-by-line from the end of file
Decision gist · record as of 2026-08-14
Yes. The package solves a real problem—efficient reverse file reading—with zero dependencies, active maintenance, and broad Python version support. No known vulnerabilities. MIT license imposes no restrictions. Install it if you need to read files backward; skip it if you don't.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low friction installation with no runtime dependencies.
- Actively maintained with recent releases; last commit 2026-04-13.
- Officially supports Python 3.7 through 3.13.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions; suitable for most projects.
last release 2025-04-21 (480 days) · last repo commit 2026-04-13 · 46 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 400,928 downloads/mo, #6,932 on PyPI
Alternatives
Verify before relying
from file_read_backwards import FileReadBackwards
with FileReadBackwards("/tmp/file", encoding="utf-8") as frb:
for line in frb:
print(line)What it is and what it does
file_read_backwards provides a Python class that reads files from the end backward, one line at a time, without loading the entire file into memory. This is useful when you need to process a file in reverse order—such as reading log files from the most recent entry backward, or extracting the last N lines efficiently. The package handles the memory-efficiency challenge by reading the file in chunks from the end and buffering only what's necessary.
It works as a context manager and supports iteration via both `for` loops and explicit `readline()` calls. The package handles ascii, latin-1, and utf-8 encodings, and correctly interprets all common line-ending styles (\r, \r\n, \n). It mimics Python's standard file object interface, making it a drop-in replacement for scenarios where reverse iteration is needed.
Use it for
- Extract the last N lines from a large log file without reading the entire file into memory.
- Process recent entries in a time-series or append-only data file in reverse chronological order.
- Tail a file backward for debugging or analysis workflows where you want to start from the end.
- Iterate through a CSV or line-delimited JSON file in reverse without buffering the whole dataset.
- Implement reverse-order file processing in resource-constrained environments or with very large files.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package solves a real problem—efficient reverse file reading—with zero dependencies, active maintenance, and broad Python version support. No known vulnerabilities. MIT license imposes no restrictions. Install it if you need to read files backward; skip it if you don't.
Install
file-read-backwards on PyPI
Before you install
Low friction installation with no runtime dependencies. Actively maintained with recent releases; last commit 2026-04-13. Officially supports Python 3.7 through 3.13.
License in practice
MIT license permits commercial and private use with minimal restrictions; suitable for most projects.
Quickstart
from file_read_backwards import FileReadBackwards
with FileReadBackwards("/tmp/file", encoding="utf-8") as frb:
for line in frb:
print(line)Package facts
| License | MIT permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 480 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 400,928 / month, #6,932 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersNatural Language :: EnglishProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9 |
Evidence: file_read_backwards-3.2.0-py2.py3-none-any.whl
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