win10使用脚本批量下载本机python依赖包

爱被打了一巴掌 2022-11-06 15:00 239阅读 0赞

## 问题描述 ##

> 很多公司的生成环境都需要离线安装  
> 如何快速将windows下的python依赖包下载到本地呢？

## 问题解决 ##

> 将本机的python依赖包写入txt  
> 使用python脚本处理txt依赖包格式  
> 使用bat脚本批量读取并下载依赖包

## 详细步骤 ##

### 1、将本机依赖导入txt ###

pip list > denpend.txt

cat depend.txt

### 2、去除依赖版本 ###

忽略版本：打开denpend.txt把版本号和空格去掉  
指定版本：使用python脚本

**replace.py**

#-*- encoding: utf-8 -*-
    
    def isonesplace(str):
        """判断字符串是否只有一个空格"""
        str = str.split(" ")
        return len(str)
    
    def func(str):
        """将中间的空格替换成双等号=="""
        str = str.strip()
        while("==" not in str and isonesplace(str) != 2):
            str = str.replace("  ", " ")
        return str.replace(" ", "==")
    
    def readfile(file):
        """返回file文件去除前两行和全部空格的字符串"""
        ## 读取depend.txt到list
        fr = open(file, 'r', encoding='utf-8')
        list = fr.readlines()
        fr.close()
        comment = ""
        num = 0
        ## 去除前两行和空格，将读取内容存入变量
        for i in list:
            num += 1
            if num > 2:
                row = i.strip()
                comment += row + "\n"
        # print(comment)
        return comment
    
    def writefile(file, str):
        """将str字符串写入file文件"""
        comment = ""
        str = str.split("\n")
        num = 1
        for row in str:
            num += 1
            if (row is ""):
                break
            if(num < len(str)):
                comment += func(row) + "\n"
            else:
                comment += func(row)
        print(comment)
        # # 清空depend.txt
        # open(file, 'w').close()
        # 将comment重新写入depend.txt
        fw = open(file, 'w')
        with fw as f:
            f.write(comment)
        # fw.write(comment)
        fw.close()
    
    if __name__ == "__main__":
        print("----------starting procedure---------")
        file = "depend.txt"
        str = readfile(file)
        writefile(file, str)
        print("----------termination routine--------")

执行脚本

python replace.py

### 3、bat脚本下载 ###

**download.bat**

@echo off
    REM for /f %%i in ('cat depend.txt') do echo "pip download %%i"
    for /f %%i in ('cat depend.txt') do echo %%i
    for /f %%i in ('cat depend.txt') do pip download %%i
    pause

### 4、文件目录 ###

脚本说明

> depend.txt：将本机python依赖包写入depend.txt  
> replace.py：将depend.txt替换成pip识别的版本名  
> download.bat：批量下载本机python离线安装包脚本

**执行前**

![20210310170045595.png][]

**执行后**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMjYyNTkzNDIx_size_16_color_FFFFFF_t_70][]

[20210310170045595.png]: /images/20221023/1214262fbde949f9bd60e9734c4450d1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMjYyNTkzNDIx_size_16_color_FFFFFF_t_70]: /images/20221023/02de3fd061ea4a448589c345ecf16db2.png