Python 生成带标签数据集的 CSV 文件

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#!/usr/bin/python
# -*- coding: UTF-8 -*-

# Python 生成 CSV 文件
# Python 生成 CSV 文件,可用于生成带标签的数据集 CSV 文件,标签从0开始自动升序:0,1,2,3...
# 作者:huihut
# 仓库:https://gist.github.com/huihut/9881c98a1d9279d4fa9dfd8475e3fe4b
# 参考:https://github.com/opencv/opencv_attic/blob/master/opencv/modules/contrib/doc/facerec/src/create_csv.py

'''

使用脚本:
* python create_csv.py <base_path> [save_path]
例如:
* python create_csv.py /Users/xx/code/dataset
* python create_csv.py /Users/xx/code/dataset ./dataset_csv.txt

目录结构(使用 tree 命令查看):
[email protected]:~/code/dataset$ tree
.
├── README
├── dataset_csv.txt
├── s01
│ ├── 01.pgm
│ ├── ...
│ └── 10.pgm
├── s02
│ ├── 01.pgm
│ ├── ...
│ └── 10.pgm
...
└── s10
├── 01.pgm
├── ...
└── 10.pgm

生成的 CSV 文件内容(使用 cat 命令查看 dataset_csv.txt 文件内容):
[email protected]:~/code/dataset$ cat dataset_csv.txt
/Users/xx/code/dataset/s01/01.pgm;0
/Users/xx/code/dataset/s01/02.pgm;0
...
/Users/xx/code/dataset/s01/10.pgm;0
/Users/xx/code/dataset/s02/01.pgm;1
/Users/xx/code/dataset/s02/02.pgm;1
...
/Users/xx/code/dataset/s10/01.pgm;9
/Users/xx/code/dataset/s10/02.pgm;9
...
/Users/xx/code/dataset/s10/10.pgm;9

'''

import sys
import os.path

if __name__ == "__main__":

SAVE_PATH = "./dataset_csv.txt"

if (len(sys.argv) != 2 and len(sys.argv) != 3):
print "usage:"
print "* python create_csv.py <base_path> [save_path]"
print "example:"
print "* python create_csv.py /Users/xx/code/dataset"
print "* python create_csv.py /Users/xx/code/dataset ./dataset_csv.txt"
sys.exit(1)
elif (len(sys.argv) == 3):
SAVE_PATH = sys.argv[2]

BASE_PATH = sys.argv[1]
SEPARATOR = ";"
fh = open(SAVE_PATH,'w')

label = 0
for dirname, dirnames, filenames in os.walk(BASE_PATH):
for subdirname in dirnames:
subject_path = os.path.join(dirname, subdirname)
for filename in os.listdir(subject_path):
abs_path = "%s/%s" % (subject_path, filename)
print "%s%s%d" % (abs_path, SEPARATOR, label)
fh.write(abs_path + SEPARATOR + str(label) + "\n")
label = label + 1
fh.close()
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