Features

Jpg image size batch modify the current folder to set
The picture modified to move new_imgthe file folder

Import library

from PIL import Image                                       # 处理图片模块
import os
import shutil                                               # 移动文件模块

If you do not install the appropriate library in advance.

Definition of a function for processing image size

def smaller_img(x, y, path):                                # x,y用来传入尺寸，path用来传入路径
    old_img = Image.open(path)
    img_deal = old_img.resize((x, y), Image.ANTIALIAS)      # 转换图片
    img_deal = img_deal.convert('RGB')                      # 保存为jpg格式才需要
    img_deal.save('新的文件名')

Traverse the file path to the current folder

now_path = os.getcwd()
new_path = os.mkdir(now_path + '\\' + 'new_img')            # 创建一个名为new_img的文件夹
for file_name in os.listdir(now_path):
    files_path = now_path + '\\' + file_name
    print(files_path)                                       # 输出当前目录下所有的文件的绝对路径

The new file picture modified to create a folder to move

I use awkward, with a string of judgment way to determine whether the modified image files.
shutilModule Reference Links

for move_name in os.listdir(now_path):
            move_path = now_path + '\\' + move_name
            if 'switch' in move_path:
                shutil.move(move_path,new_dir)             # shutil.move(文件/目录 , 目录)
            else:
                 print(move_path, '无须移动')

The integration of these functions together

from PIL import Image
import os
import shutil

x = input('请输入需要修改的尺寸，长：')
x = int(x)
y = input('请输入需要修改的尺寸，高：')
y = int(y)

now_path = os.getcwd()
new_path = os.mkdir(now_path + '\\' + 'new_img')
new_dir = now_path + '\\' + 'new_img'

# 修改图片大小
def smaller_img(x, y, path):
    path = str(path)
    old_img = Image.open(path)
    img_deal = old_img.resize((x, y), Image.ANTIALIAS) 
    img_deal = img_deal.convert('RGB') 
    img_deal.save('switch_' + file_name)
# 遍历文件夹下的文件，并判断是否是JPG文件
for file_name in os.listdir(now_path):
    files_path = now_path + '\\' + file_name
    if 'jpg' in files_path:
        smaller_img(x, y, files_path)
        # 遍历文件来判断是否是转换后的jpg文件
        for move_name in os.listdir(now_path):
            move_path = now_path + '\\' + move_name
            if 'switch' in move_path:
                shutil.move(move_path,new_dir)
            else:
                 print(move_path, '无须移动')
        print(file_name, 'switch success')
    else:
        print(file_name, 'is not img')

Conclusion

Please indicate the wrong place, please a lot of criticism

Python3 bulk edit JPG picture size