update,

vinniesniper-54816/task1/_lab/007-test/negdata.1/_PNG2JPG.py

@@ -0,0 +1,26 @@
+import os
+from PIL import Image
+ 
+ 
+# 获取指定目录下的所有png图片
+def get_all_png_files(dir):
+    files_list = []
+    for root, dirs, files in os.walk(dir):
+        for file in files:
+            if os.path.splitext(file)[1] == '.png':
+                files_list.append(os.path.join(root, file))
+    return files_list
+ 
+ 
+# 批量转换png图片为jpg格式
+def png2jpg(files_list):
+    for file in files_list:
+        img = Image.open(file)
+        new_file = os.path.splitext(file)[0] + '.jpg'
+        img.convert('RGB').save(new_file)
+ 
+ 
+if __name__ == '__main__':
+    dir = './' #png图片目录
+    files_list = get_all_png_files(dir)
+    png2jpg(files_list)