Python创建cvs文件，包含标签和图片数据

　　  在深度学习或者机器学习的时候，常常需要对数据进行整理和分类，最常见的是通过对数据路径和标签写入

到一个整合的txt或者csv文件中，训练进行读取。

 1 #coding=utf-8
 2 #!/usr/bin/env python
 4 import sys
 5 import os.path
 6
 7 # This is a tiny script to help you creating a CSV file from a face
 8 # database with a similar hierarchie:
 9 #
11 #  .
12 #  |-- README
13 #  |-- s1
14 #  |   |-- 1.pgm
15 #  |   |-- ...
16 #  |   |-- 10.pgm
17 #  |-- s2
18 #  |   |-- 1.pgm
19 #  |   |-- ...
20 #  |   |-- 10.pgm
21 #  ...
22 #  |-- s40
23 #  |   |-- 1.pgm
24 #  |   |-- ...
25 #  |   |-- 10.pgm
26 #
27
28 if __name__ == "__main__":
29
30     if len(sys.argv) != 3:
31         print "usage: create_csv <base_path>"
32         sys.exit(1)
33
34     BASE_PATH=sys.argv[1]
35     SEPARATOR=";"
36     fh = open(sys.argv[2], ‘w‘)
37
38     label = 0
39     for dirname, dirnames, filenames in os.walk(BASE_PATH):
40         for subdirname in dirnames:
41             subject_path = os.path.join(dirname, subdirname)
42             for filename in os.listdir(subject_path):
43                 abs_path = "%s/%s" % (subject_path, filename)
44                 print "%s%s%d" % (abs_path, SEPARATOR, label)
45                 fh.write(abs_path)
46                 fh.write(SEPARATOR)
47                 fh.write(str(label))
48                 fh.write("\n")
49             label = label + 1
50     fh.close()

　　调用方式如下

python create.py d:/test/jaf d:/a.csv

　　生成文件结果如下图所示

　　通过替换可以将斜杠调整一致