edit_pic_exif.py

#/usr/bin/env python2.7
"""
pip install piexif
pip install pillow
"""
import glob, os
from datetime import datetime
import piexif

path_to_base_folder = "/Users/ronsh/Downloads/photo_scan/all_pic/"
os.chdir(path_to_base_folder)
for file_name in glob.glob("*.jpg"):
    print file_name
    date_info = file_name.split('_')[0].split('-')
    try:
        date_info = datetime(year=int(date_info[2]), month=int(date_info[1]), day=int(date_info[0]), hour=9, minute=0)
    except ValueError:
        date_info = datetime(year=int(date_info[2]), month=int(date_info[0]), day=int(date_info[1]), hour=9, minute=0)
    exif_dict = piexif.load(file_name)
    exif_dict['Exif'][piexif.ExifIFD.DateTimeOriginal] = date_info.strftime("%Y:%m:%d %H:%M:%S")
    print exif_dict
    exif_bytes = piexif.dump(exif_dict)
    piexif.insert(exif_bytes, file_name)