8个Python 实用脚本

灰太狼 2022-10-16 08:42 114阅读 0赞

脚本写的好，下班下得早！程序员的日常工作除了编写程序代码，还不可避免地需要处理相关的测试和验证工作。

例如，访问某个网站一直不通，需要确定此地址是否可访问，服务器返回什么，进而确定问题在于什么。完成这个任务，如果一味希望采用编译型语言来编写这样的代码，实践中的时间和精力是不够的，这个时候就需要发挥脚本的神奇作用！

毫不夸张的说，能否写出高效实用的脚本代码，直接影响着一个程序员的幸福生活\[下班时间\]。下面整理 8 个实用的 Python 脚本，需要的时候改改直接用，建议收藏！

**1.解决 linux 下 unzip 乱码的问题。**

import os
    import sys
    import zipfile
    import argparse
    
    s = '\x1b[%d;%dm%s\x1b[0m'       
    
    def unzip(path):
    
        file = zipfile.ZipFile(path,"r")
        if args.secret:
            file.setpassword(args.secret)
    
        for name in file.namelist():
            try:
                utf8name=name.decode('gbk')
                pathname = os.path.dirname(utf8name)
            except:
                utf8name=name
                pathname = os.path.dirname(utf8name)
    
            #print s % (1, 92, ' >> extracting:'), utf8name
            #pathname = os.path.dirname(utf8name)
            if not os.path.exists(pathname) and pathname != "":
                os.makedirs(pathname)
            data = file.read(name)
            if not os.path.exists(utf8name):
                try:
                    fo = open(utf8name, "w")
                    fo.write(data)
                    fo.close
                except:
                    pass
        file.close()
    
    def main(argv):
        ######################################################
        # for argparse
        p = argparse.ArgumentParser(description='解决unzip乱码')
        p.add_argument('xxx', type=str, nargs='*', \
            help='命令对象.')
        p.add_argument('-s', '--secret', action='store', \
            default=None, help='密码')
        global args
        args = p.parse_args(argv[1:])
        xxx = args.xxx
    
        for path in xxx:
            if path.endswith('.zip'):
                if os.path.exists(path):
                    print s % (1, 97, ' ++ unzip:'), path
                    unzip(path)
                else:
                    print s % (1, 91, ' !! file doesn\'t exist.'), path
            else:
                print s % (1, 91, ' !! file isn\'t a zip file.'), path
    
    if __name__ == '__main__':
        argv = sys.argv
        main(argv)

**2.统计当前根目录代码行数。**

# coding=utf-8
    import os
    import time
    # 设定根目录
    basedir = './'
    filelists = []
    # 指定想要统计的文件类型
    whitelist = ['cpp', 'h']
    #遍历文件, 递归遍历文件夹中的所有
    def getFile(basedir):
        global filelists
        for parent,dirnames,filenames in os.walk(basedir):
            for filename in filenames:
                ext = filename.split('.')[-1]
                #只统计指定的文件类型，略过一些log和cache文件
                if ext in whitelist:
                    filelists.append(os.path.join(parent,filename))
    #统计一个的行数
    def countLine(fname):
        count = 0
        # 把文件做二进制看待,read.
        for file_line in open(fname, 'rb').readlines():
            if file_line != '' and file_line != '\n': #过滤掉空行
                count += 1
        print (fname + '----' , count)
        return count
    if __name__ == '__main__' :
        startTime = time.clock()
        getFile(basedir)
        totalline = 0
        for filelist in filelists:
            totalline = totalline + countLine(filelist)
        print ('total lines:',totalline)
        print ('Done! Cost Time: %0.2f second' % (time.clock() - startTime))

**3.扫描当前目录和所有子目录并显示大小。**

''' 遇到问题没人解答？小编创建了一个Python学习交流QQ群：579817333 寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！ '''
    import os
    import sys      
    try:
        directory = sys.argv[1]   
    except IndexError:
        sys.exit("Must provide an argument.")
    
    dir_size = 0   
    fsizedicr = { 'Bytes': 1,
                 'Kilobytes': float(1) / 1024,
                 'Megabytes': float(1) / (1024 * 1024),
                 'Gigabytes': float(1) / (1024 * 1024 * 1024)}
    for (path, dirs, files) in os.walk(directory):      
        for file in files:                              
            filename = os.path.join(path, file)
            dir_size += os.path.getsize(filename)       
    
    fsizeList = [str(round(fsizedicr[key] * dir_size, 2)) + " " + key for key in fsizedicr] 
    
    if dir_size == 0: print ("File Empty") 
    else:
      for units in sorted(fsizeList)[::-1]: 
          print ("Folder Size: " + units)

**4.将源目录240天以上的所有文件移动到目标目录。**

import shutil
    import sys
    import time
    import os
    import argparse
    
    usage = 'python move_files_over_x_days.py -src [SRC] -dst [DST] -days [DAYS]'
    description = 'Move files from src to dst if they are older than a certain number of days. Default is 240 days'
    
    args_parser = argparse.ArgumentParser(usage=usage, description=description)
    args_parser.add_argument('-src', '--src', type=str, nargs='?', default='.', help='(OPTIONAL) Directory where files will be moved from. Defaults to current directory')
    args_parser.add_argument('-dst', '--dst', type=str, nargs='?', required=True, help='(REQUIRED) Directory where files will be moved to.')
    args_parser.add_argument('-days', '--days', type=int, nargs='?', default=240, help='(OPTIONAL) Days value specifies the minimum age of files to be moved. Default is 240.')
    args = args_parser.parse_args()
    
    if args.days < 0:
    	args.days = 0
    
    src = args.src  # 设置源目录
    dst = args.dst  # 设置目标目录
    days = args.days # 设置天数
    now = time.time()  # 获得当前时间
    
    if not os.path.exists(dst):
    	os.mkdir(dst)
    
    for f in os.listdir(src):  # 遍历源目录所有文件
        if os.stat(f).st_mtime < now - days * 86400:  # 判断是否超过240天
            if os.path.isfile(f):  # 检查是否是文件
                shutil.move(f, dst)  # 移动文件

**5.扫描脚本目录，并给出不同类型脚本的计数。**

import os																	
    import shutil																
    from time import strftime												
    
    logsdir="c:\logs\puttylogs"											
    zipdir="c:\logs\puttylogs\zipped_logs"							
    zip_program="zip.exe"												
    
    for files in os.listdir(logsdir):										
    	if files.endswith(".log"):										
    		files1=files+"."+strftime("%Y-%m-%d")+".zip"		
    		os.chdir(logsdir) 												
    		os.system(zip_program + " " +  files1 +" "+ files)	
    		shutil.move(files1, zipdir)									 
    		os.remove(files)

**6.下载Leetcode的算法题。**

''' 遇到问题没人解答？小编创建了一个Python学习交流QQ群：579817333 寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！ '''
    import sys
    import re
    import os
    import argparse
    import requests
    from lxml import html as lxml_html
    
    try:
        import html
    except ImportError:
        import HTMLParser
        html = HTMLParser.HTMLParser()
    
    try:
        import cPickle as pk
    except ImportError:
        import pickle as pk
    
    class LeetcodeProblems(object):
        def get_problems_info(self):
            leetcode_url = 'https://leetcode.com/problemset/algorithms'
            res = requests.get(leetcode_url)
            if not res.ok:
                print('request error')
                sys.exit()
            cm = res.text
            cmt = cm.split('tbody>')[-2]
            indexs = re.findall(r'<td>(\d+)</td>', cmt)
            problem_urls = ['https://leetcode.com' + url \
                            for url in re.findall(
                                r'<a href="(/problems/.+?)"', cmt)]
            levels = re.findall(r"<td value='\d*'>(.+?)</td>", cmt)
            tinfos = zip(indexs, levels, problem_urls)
            assert (len(indexs) == len(problem_urls) == len(levels))
            infos = []
            for info in tinfos:
                res = requests.get(info[-1])
                if not res.ok:
                    print('request error')
                    sys.exit()
                tree = lxml_html.fromstring(res.text)
                title = tree.xpath('//meta[@property="og:title"]/@content')[0]
                description = tree.xpath('//meta[@property="description"]/@content')
                if not description:
                    description = tree.xpath('//meta[@property="og:description"]/@content')[0]
                else:
                    description = description[0]
                description = html.unescape(description.strip())
                tags = tree.xpath('//div[@id="tags"]/following::a[@class="btn btn-xs btn-primary"]/text()')
                infos.append(
                    { 
                        'title': title,
                        'level': info[1],
                        'index': int(info[0]),
                        'description': description,
                        'tags': tags
                    }
                )
    
            with open('leecode_problems.pk', 'wb') as g:
                pk.dump(infos, g)
            return infos
    
        def to_text(self, pm_infos):
            if self.args.index:
                key = 'index'
            elif self.args.title:
                key = 'title'
            elif self.args.tag:
                key = 'tags'
            elif self.args.level:
                key = 'level'
            else:
                key = 'index'
    
            infos = sorted(pm_infos, key=lambda i: i[key])
    
            text_template = '## {index} - {title}\n' \
                '~{level}~ {tags}\n' \
                '{description}\n' + '\n' * self.args.line
            text = ''
            for info in infos:
                if self.args.rm_blank:
                    info['description'] = re.sub(r'[\n\r]+', r'\n', info['description'])
                text += text_template.format(**info)
    
            with open('leecode problems.txt', 'w') as g:
                g.write(text)
    
        def run(self):
            if os.path.exists('leecode_problems.pk') and not self.args.redownload:
                with open('leecode_problems.pk', 'rb') as f:
                    pm_infos = pk.load(f)
            else:
                pm_infos = self.get_problems_info()
    
            print('find %s problems.' % len(pm_infos))
            self.to_text(pm_infos)
    
    def handle_args(argv):
        p = argparse.ArgumentParser(description='extract all leecode problems to location')
        p.add_argument('--index', action='store_true', help='sort by index')
        p.add_argument('--level', action='store_true', help='sort by level')
        p.add_argument('--tag', action='store_true', help='sort by tag')
        p.add_argument('--title', action='store_true', help='sort by title')
        p.add_argument('--rm_blank', action='store_true', help='remove blank')
        p.add_argument('--line', action='store', type=int, default=10, help='blank of two problems')
        p.add_argument('-r', '--redownload', action='store_true', help='redownload data')
        args = p.parse_args(argv[1:])
        return args
    
    def main(argv):
        args = handle_args(argv)
        x = LeetcodeProblems()
        x.args = args
        x.run()
    
    if __name__ == '__main__':
        argv = sys.argv
        main(argv)

**7.将 Markdown 转换为 HTML。**

import sys
    import os
    
    from bs4 import BeautifulSoup
    import markdown
    
    
    class MarkdownToHtml:
    
        headTag = '<head><meta charset="utf-8" /></head>'
    
        def __init__(self,cssFilePath = None):
            if cssFilePath != None:
                self.genStyle(cssFilePath)
    
        def genStyle(self,cssFilePath):
            with open(cssFilePath,'r') as f:
                cssString = f.read()
            self.headTag = self.headTag[:-7] + '<style type="text/css">{}</style>'.format(cssString) + self.headTag[-7:]
    
        def markdownToHtml(self, sourceFilePath, destinationDirectory = None, outputFileName = None):
            if not destinationDirectory:
                # 未定义输出目录则将源文件目录(注意要转换为绝对路径)作为输出目录
                destinationDirectory = os.path.dirname(os.path.abspath(sourceFilePath))
            if not outputFileName:
                # 未定义输出文件名则沿用输入文件名
                outputFileName = os.path.splitext(os.path.basename(sourceFilePath))[0] + '.html'
            if destinationDirectory[-1] != '/':
                destinationDirectory += '/'
            with open(sourceFilePath,'r', encoding='utf8') as f:
                markdownText = f.read()
            # 编译出原始 HTML 文本
            rawHtml = self.headTag + markdown.markdown(markdownText,output_format='html5')
            # 格式化 HTML 文本为可读性更强的格式
            beautifyHtml = BeautifulSoup(rawHtml,'html5lib').prettify()
            with open(destinationDirectory + outputFileName, 'w', encoding='utf8') as f:
                f.write(beautifyHtml)
    
    
    if __name__ == "__main__":
        mth = MarkdownToHtml()
        # 做一个命令行参数列表的浅拷贝，不包含脚本文件名
        argv = sys.argv[1:]
        # 目前列表 argv 可能包含源文件路径之外的元素（即选项信息）
        # 程序最后遍历列表 argv 进行编译 markdown 时，列表中的元素必须全部是源文件路径
        outputDirectory = None
        if '-s' in argv:
            cssArgIndex = argv.index('-s') +1
            cssFilePath = argv[cssArgIndex]
            # 检测样式表文件路径是否有效
            if not os.path.isfile(cssFilePath):
                print('Invalid Path: '+cssFilePath)
                sys.exit()
            mth.genStyle(cssFilePath)
            # pop 顺序不能随意变化
            argv.pop(cssArgIndex)
            argv.pop(cssArgIndex-1)
        if '-o' in argv:
            dirArgIndex = argv.index('-o') +1
            outputDirectory = argv[dirArgIndex]
            # 检测输出目录是否有效
            if not os.path.isdir(outputDirectory):
                print('Invalid Directory: ' + outputDirectory)
                sys.exit()
            # pop 顺序不能随意变化
            argv.pop(dirArgIndex)
            argv.pop(dirArgIndex-1)
        # 至此，列表 argv 中的元素均是源文件路径
        # 遍历所有源文件路径
        for filePath in argv:
            # 判断文件路径是否有效
            if os.path.isfile(filePath):
                mth.markdownToHtml(filePath, outputDirectory)
            else:
                print('Invalid Path: ' + filePath)

**8.文本文件编码检测与转换。**

import sys
    import os
    import argparse
    from chardet.universaldetector import UniversalDetector
    
    parser = argparse.ArgumentParser(description = '文本文件编码检测与转换')
    parser.add_argument('filePaths', nargs = '+',
                       help = '检测或转换的文件路径')
    parser.add_argument('-e', '--encoding', nargs = '?', const = 'UTF-8',
                       help = ''' 目标编码。支持的编码有： ASCII, (Default) UTF-8 (with or without a BOM), UTF-16 (with a BOM), UTF-32 (with a BOM), Big5, GB2312/GB18030, EUC-TW, HZ-GB-2312, ISO-2022-CN, EUC-JP, SHIFT_JIS, ISO-2022-JP, ISO-2022-KR, KOI8-R, MacCyrillic, IBM855, IBM866, ISO-8859-5, windows-1251, ISO-8859-2, windows-1250, EUC-KR, ISO-8859-5, windows-1251, ISO-8859-1, windows-1252, ISO-8859-7, windows-1253, ISO-8859-8, windows-1255, TIS-620 ''')
    parser.add_argument('-o', '--output',
                       help = '输出目录')
    # 解析参数，得到一个 Namespace 对象
    args = parser.parse_args()
    # 输出目录不为空即视为开启转换, 若未指定转换编码，则默认为 UTF-8
    if args.output != None:
        if not args.encoding:
            # 默认使用编码 UTF-8
            args.encoding = 'UTF-8'
        # 检测用户提供的输出目录是否有效
        if not os.path.isdir(args.output):
            print('Invalid Directory: ' + args.output)
            sys.exit()
        else:
            if args.output[-1] != '/':
                args.output += '/'
    # 实例化一个通用检测器
    detector = UniversalDetector()
    print()
    print('Encoding (Confidence)',':','File path')
    for filePath in args.filePaths:
        # 检测文件路径是否有效，无效则跳过
        if not os.path.isfile(filePath):
            print('Invalid Path: ' + filePath)
            continue
        # 重置检测器
        detector.reset()
        # 以二进制模式读取文件
        for each in open(filePath, 'rb'):
            # 检测器读取数据
            detector.feed(each)
            # 若检测完成则跳出循环
            if detector.done:
                break
        # 关闭检测器
        detector.close()
        # 读取结果
        charEncoding = detector.result['encoding']
        confidence = detector.result['confidence']
        # 打印信息
        if charEncoding is None:
            charEncoding = 'Unknown'
            confidence = 0.99
        print('{} {:>12} : {}'.format(charEncoding.rjust(8),
            '('+str(confidence*100)+'%)', filePath))
        if args.encoding and charEncoding != 'Unknown' and confidence > 0.6:
            # 若未设置输出目录则覆盖源文件
            outputPath = args.output + os.path.basename(filePath) if args.output else filePath
            with open(filePath, 'r', encoding = charEncoding, errors = 'replace') as f:
                temp = f.read()
            with open(outputPath, 'w', encoding = args.encoding, errors = 'replace') as f:
                f.write(temp)