import os
folder_path = "1"
# 遍历文件夹中的所有文件
for filename in os.listdir(folder_path):
# 检查文件是否以 .jpg 结尾
if filename.endswith(".jpg"):
# if filename.lower().endswith(".jpg"):
new_filename = filename[:-4] + ".JPG"
# new_filename = filename[:-4] + ".png"
# 构建完整的文件路径
old_file_path = os.path.join(folder_path, filename)
new_file_path = os.path.join(folder_path, new_filename)
# 重命名文件
os.rename(old_file_path, new_file_path)
print(f" {old_file_path} to {new_file_path}")