Python project next generation requirements. TXT method

一、使用pip freeae

pip freeze > requirements.txt

This command is limited：

該命令只會生成通過pip install 安裝的包
如果沒有創建Python的虛擬環境virtualenv,該命令會將環境中所有的包都輸出到requirements.txt文件,不管你當前的Project有沒有用到這些包

二、使用pipreqs

Pipreqs Only statistical projects using bag

2.1、安裝pipreqs

pip install pipreqs

2.2、使用方法

pipreqs "目錄" #在目錄下生成requirements.txt

2.3、特殊說明

2.3.1、Mac 下沒法使用

pipreqs
zsh: command not found: pipreqs

Didn't find ways to use

2.3.2、Linux 使用報錯

pipreqs ./
Traceback (most recent call last):
File "/usr/bin/pipreqs", line 7, in <module>
from pipreqs.pipreqs import main
File "/usr/lib/python2.7/site-packages/pipreqs/pipreqs.py", line 51, in <module>
from pipreqs import __version__
ImportError: cannot import name __version__

解決辦法,更換pipreqs版本

# 查看可安裝版本
pip install pipreqs==100
You are using pip version 7.1.0, however version 22.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting pipreqs==100
Could not find a version that satisfies the requirement pipreqs==100 (from versions: 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.7, 0.2.8, 0.2.9, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.3.5, 0.3.6, 0.3.7, 0.3.8, 0.3.9, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.4.5, 0.4.6, 0.4.7, 0.4.8, 0.4.9, 0.4.10, 0.4.11)
No matching distribution found for pipreqs==100
# Select a version installed
pip install pipreqs==0.4.0
# 查看能否使用
pipreqs --help
pipreqs - Generate pip requirements.txt file based on imports
Usage:
pipreqs [options] <path>
Options:
--use-local Use ONLY local package info instead of querying PyPI
--pypi-server Use custom PyPi server
--proxy Use Proxy, parameter will be passed to requests library. You can also just set the
environments parameter in your terminal:
$ export HTTP_PROXY="http://10.10.1.10:3128"
$ export HTTPS_PROXY="https://10.10.1.10:1080"
--debug Print debug information
--encoding <charset> Use encoding parameter for file open
--savepath <file> Save the list of requirements in the given file
--force Overwrite existing requirements.txt

2.3.3、Windows下使用

pipreqs "目錄" --encoding=utf8

三、Change the environment after installationrequirements.txt

pip install -r requirements.txt

四、參考文檔

1、https://www.cnblogs.com/kai-/p/15572539.html

2、https://blog.csdn.net/forGemini/article/details/124098636