用python对图片批量压缩和格式转换

Aidan075 等级 85 0 0

python作为简单、易学的编程语言,上手入门要容易许多。如果数据分析、机器学习、人工智能这些对你来说比较遥远,用python写一点实用的小脚本帮你解决问题、提高办公效率也是不错的。

图片缩放、格式转换是一个常见的需求,网上虽然有许多这样的工具,但是下载站的质量参差不齐,如果没注意的话非常容易中招。这样不如自己用python写一个,安全有保障。

主要用到了PIL对图像进行处理。tkinter用来做图形界面,方便打包分享使用。

实现效果

实现代码

import os  
from PIL import Image  
import tkinter  
import tkinter.filedialog  
import tkinter.messagebox  


class Window():  
    def __init__(self):  
        self.root = root = tkinter.Tk()  
        self.menu = tkinter.Menu(root)  
        self.submenu = tkinter.Menu(self.menu, tearoff=0)  
        root.config(menu=self.submenu)  
        self.Image = tkinter.StringVar()  
        self.Image.set('.bmp')  
        self.mstatus = tkinter.IntVar()  
        self.fstatus = tkinter.IntVar()  
        self.mstatus.set(0)  
        self.fstatus.set(0)  
        self.status = tkinter.StringVar()  
        self.label = tkinter.Label(root, text='输入百分比')  
        self.label.place(x=5, y=5)  
        self.entryNew = tkinter.Entry(root)  
        self.entryNew.place(x=70, y=5)  
        self.checkM = tkinter.Checkbutton(self.root, text='批量转换', command=self.OnCheckM, variable=self.mstatus,  
                                          onvalue=1, offvalue=0)  
        self.checkM.place(x=5, y=30)  
        self.label = tkinter.Label(root, text='选择文件')  
        self.label.place(x=5, y=55)  
        self.entryFile = tkinter.Entry(root)  
        self.entryFile.place(x=70, y=55)  
        self.BrowserFileButton = tkinter.Button(root, text='浏览', command=self.BrowserFile)  
        self.BrowserFileButton.place(x=220, y=55)  
        self.label = tkinter.Label(root, text='选择目录')  
        self.label.place(x=5, y=90)  
        self.entryDir = tkinter.Entry(root, state=tkinter.DISABLED)  
        self.entryDir.place(x=70, y=90)  
        self.BrowserDirButton = tkinter.Button(root, text='浏览', command=self.BrowserDir, state=tkinter.DISABLED)  
        self.BrowserDirButton.place(x=220, y=90)  

        self.checkF = tkinter.Checkbutton(root, text='改变文件格式', onvalue=1, offvalue=0, variable=self.fstatus,  
                                          command=self.OnCheckF)  
        self.checkF.place(x=5, y=120)  

        frame = tkinter.Frame(root, )  
        frame.place(x=10, y=150)  
        self.rBmp = tkinter.Radiobutton(frame, variable=self.Image, value='.bmp', text='BMP', state=tkinter.DISABLED)  
        self.rBmp.pack(anchor='w')  
        self.rJpg = tkinter.Radiobutton(frame, variable=self.Image, value='.jpg', text='JPG', state=tkinter.DISABLED)  
        self.rJpg.pack(anchor='w')  
        self.rPng = tkinter.Radiobutton(frame, variable=self.Image, value='.png', text='PNG', state=tkinter.DISABLED)  
        self.rPng.pack(anchor='w')  
        self.rGif = tkinter.Radiobutton(frame, variable=self.Image, value='.gif', text='GIF', state=tkinter.DISABLED)  
        self.rGif.pack(anchor='w')  
        self.ButtonCov = tkinter.Button(root, text='转换格式', command=self.Conv, )  
        self.ButtonCov.place(x=120, y=180)  
        self.statusLabel = tkinter.Label(root, textvariable=self.status, fg='red')  
        self.statusLabel.place(x=80, y=220)  

    def OnCheckM(self):  
        if not self.mstatus.get():  
            self.entryDir.config(state=tkinter.DISABLED)  
            self.entryFile.config(state=tkinter.NORMAL)  
            self.BrowserFileButton.config(state=tkinter.NORMAL)  
            self.BrowserDirButton.config(state=tkinter.DISABLED)  
        else:  
            self.entryDir.config(state=tkinter.NORMAL)  
            self.entryFile.config(state=tkinter.DISABLED)  
            self.BrowserFileButton.config(state=tkinter.DISABLED)  
            self.BrowserDirButton.config(state=tkinter.NORMAL)  

    def OnCheckF(self):  
        if not self.fstatus.get():  
            self.rBmp.config(state=tkinter.DISABLED)  
            self.rPng.config(state=tkinter.DISABLED)  
            self.rJpg.config(state=tkinter.DISABLED)  
            self.rGif.config(state=tkinter.DISABLED)  
        else:  
            self.rBmp.config(state=tkinter.NORMAL)  
            self.rPng.config(state=tkinter.NORMAL)  
            self.rJpg.config(state=tkinter.NORMAL)  
            self.rGif.config(state=tkinter.NORMAL)  

    def BrowserFile(self):  
        file = tkinter.filedialog.askopenfilename(title='Python player',  
                                                  filetypes=[('JPG', '*.jpg'), ('BMP', '*.bmp'), ('GIF', '*.gif'),  
                                                             ('PNG', '*.png')])  
        if file:  
            self.entryFile.delete(0, tkinter.END)  
            self.entryFile.insert(tkinter.END, file)  

    def BrowserDir(self):  
        directory = tkinter.filedialog.askdirectory(title='Python')  
        if directory:  
            self.entryDir.delete(0, tkinter.END)  
            self.entryDir.insert(tkinter.END, directory)  

    def make(self, file, format=None):  
        im = Image.open(file)  
        mode = im.mode  
        if mode not in ('L', 'RGB'):  
            im = im.convert('RGB')  
        width, height = im.size  
        s = self.entryNew.get()  
        if s == '':  
            tkinter.messagebox.showerror('出错啦', '请输入百分比')  
            return  
        else:  
            n = int(s)  
        nwidth = int(width * n / 100)  
        nheight = int(height * n / 100)  
        thumb = im.resize((nwidth, nheight), Image.ANTIALIAS)  
        if format:  
            thumb.save(file[:(len(file) - 4)] + '_thumb' + format)  
        else:  
            thumb.save(file[:(len(file) - 4)] + '_thumb' + file[-4:])  

    def Conv(self):  
        n = 0  
        if self.mstatus.get():  
            path = self.entryDir.get()  
            if path == "":  
                tkinter.messagebox.showerror('出错啦', '请选择路径')  
                return  
            filenames = os.listdir(path)  
            if self.fstatus.get():  
                f = self.Image.get()  
                print(f)  
                for filename in filenames:  
                    if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):  
                        self.make(path + '/' + filename, f)  
                        n += 1  
            else:  
                for filename in filenames:  
                    if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):  
                        self.make(path + '/' + filename)  
                        n += 1  
        else:  
            file = self.entryFile.get()  
            if file == '':  
                tkinter.messagebox.showerror('出错啦', '请选择文件')  
                return  
            if self.fstatus.get():  
                f = self.Image.get()  
                self.make(file, f)  
                n += 1  
            else:  
                self.make(file)  
                n += 1  
        self.status.set('成功转换 %d 张图片' % n)  

    def mainloop(self):  
        self.root.minsize(280, 270)  
        self.root.maxsize(280, 250)  
        self.root.title('图片转换')  
        self.root.mainloop()  


if __name__ == "__main__":  
    window = Window()  
    window.mainloop()  

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