python读取文件名及后缀 |
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因为某些原因,需要读取d.lib后缀的文件,在此写下记录 os.listdir() 语法:os.listdir(path) 函数用途:输出路径下所有文件的文件名 实验代码:假如我们需要读取该文件夹所包含全部文件名 os.listdir 以列表的形式返回指定文件夹的下所有内容,不管是文件还是文件夹 os.path.splitext() 语法:os.path.splitext(文件名) 函数用途:将文件名和扩展名分开。 实验代码: name1 = "opencv_xphoto330d.lib" name2 = "D:\\opencv_xphoto330d.lib" result1 = os.path.splitext(name1) result2 = os.path.splitext(name2) print("result1:",result1) print("result2:",result2) print("type:",type(result1),type(result2)) 输出: result1: ('opencv_xphoto330d', '.lib') result2: ('D:\\opencv_xphoto330d', '.lib') type: 结果分析:就是以文件名中的'.'作为分隔符,分隔文件名称与文件后缀,以元组的形式返回文件名与后缀。 os.path.split() 语法:os.path.split(path) 函数用途:返回文件的路径和文件名。 实验代码: name1 = "opencv_xphoto330d.lib" name2 = "E:\\vs_code\\qtVideo\\opencv_xphoto330d.lib" name3 = "E:\\vs_code\\qtVideo" result1 = os.path.split(name1) result2 = os.path.split(name2) result3 = os.path.split(name3) print("result1:",result1) print("result2:",result2) print("result3:",result3) print("type:",type(result1),type(result2),type(result3)) 输出: result1: ('', 'opencv_xphoto330d.lib') result2: ('E:\\vs_code\\qtVideo', 'opencv_xphoto330d.lib') result3: ('E:\\vs_code', 'qtVideo') type: 结果分析:就是以路径最后一个'/'或者'\\'为分隔,以元祖的形式返回路径与文件名,若只有文件名,则输出文件名与空。 案例分析: 指定文件夹下包含.lib、d.lib、其他文件夹,需要获得文件夹中所有d.lib后缀的文件名 通过listdir()获得该文件夹下所有文件名,使用splitext()分离文件名和后缀,判断文件名最后一个是否为d,后缀是否为lib 代码实验: import os path = "E:/vs_code/qtVideo/lib" datanames = os.listdir(path) for i in datanames: if os.path.splitext(i)[1]=='.lib' and os.path.splitext(i)[0][-1]=='d': print(i) 输出: opencv_aruco330d.lib opencv_bgsegm330d.lib opencv_bioinspired330d.lib opencv_calib3d330d.lib opencv_ccalib330d.lib opencv_core330d.lib opencv_datasets330d.lib opencv_dnn330d.lib opencv_dpm330d.lib opencv_face330d.lib opencv_features2d330d.lib opencv_flann330d.lib opencv_fuzzy330d.lib opencv_highgui330d.lib opencv_imgcodecs330d.lib opencv_imgproc330d.lib opencv_img_hash330d.lib opencv_line_descriptor330d.lib opencv_ml330d.lib opencv_objdetect330d.lib opencv_optflow330d.lib opencv_phase_unwrapping330d.lib opencv_photo330d.lib opencv_plot330d.lib opencv_reg330d.lib opencv_rgbd330d.lib opencv_saliency330d.lib opencv_shape330d.lib opencv_stereo330d.lib opencv_stitching330d.lib opencv_structured_light330d.lib opencv_superres330d.lib opencv_surface_matching330d.lib opencv_text330d.lib opencv_tracking330d.lib opencv_video330d.lib opencv_videoio330d.lib opencv_videostab330d.lib opencv_xfeatures2d330d.lib opencv_ximgproc330d.lib opencv_xobjdetect330d.lib opencv_xphoto330d.lib可以看到我们把文件中的d.lib的文件都已经筛选出来了 |
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