Python搜索文件代码详解编程语言

这里以在windows下搜索并启动QQ为例，我先把开始菜单、桌面和快速启动栏找了一遍，这样能缩短查找时间。如果找不到再到每个分区中查找。 

    import os   
    disk=['D','E','F','G','H']   
    def search_file(filename,search_path,pathsep=os.pathsep):   
        for path in search_path.split(pathsep):   
            candidate = os.path.join(path,filename)   
            if os.path.isfile(candidate):   
                return os.path.abspath(candidate)   
    if __name__=='__main__':   
        found=False   
        for i in os.walk('C:/ProgramData/Microsoft/Windows/Start Menu/Programs'):   
            search_path=i[0]   
            find_file=search_file('腾讯QQ.lnk',search_path)   
            if find_file:   
                os.startfile(find_file)   
                found=True   
        if not found:   
            for i in os.walk('C:/Users/Jack/Desktop'):   
                search_path=i[0]   
                find_file=search_file('QQ.exe.lnk',search_path)   
                if find_file:   
                    os.startfile(find_file)   
                    found=True   
        if not found:   
            for i in os.walk('C:/Users/Jack/AppData/Roaming/Microsoft/Internet Explorer/Quick Launch'):   
                search_path=i[0]   
                find_file=search_file('腾讯QQ.lnk',search_path)   
                if find_file:   
                    os.startfile(find_file)   
                    found=True   
        if not found:   
            for i in range(0,5):   
                for j in os.walk(disk[i]+':/'):   
                    search_path=j[0]   
                    find_file=search_file('QQProtect.exe',search_path)   
                    if find_file:   
                        os.startfile(find_file)   
                        found=True   
        if not found:   
            for i in os.walk('C:/Program Files/QQ'):   
                search_path=i[0]   
                find_file=search_file('QQProtect.exe',search_path)   
                if find_file:   
                    os.startfile(find_file)   
                    found=True   
        if not found:   
            print"无法找到QQ"