python简单代码画图
python+pyqt5实现图片批量缩放工具
批量修改图片大小好像用ps也可以，不过我不会，程序猿就用程序来解决。
这段时间学了下python，很强大，之前一些不知道怎么处理的东西在python里面都能找到解决方法。
工具界面如下图
这个工具需要用到第三方库 pillow 和 pyqt5，可通过命令行安装。
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pip install pillowpip install pyqt5 |
代码：
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#!-*-coding:utf-8-*-from pil import imageimport hashlib, os, sysfrom pyqt5.qtgui import qfont, qiconfrom pyqt5.qtwidgets import (qfiledialog, qmessagebox, qgridlayout, qlineedit, qtextedit, qlabel, qwidget, qtooltip, qpushbutton, qapplication, qinputdialog)from pyqt5.qtcore import qcoreapplicationdef makedir(path): if not os.path.exists(path): os.mkdir(path)def image_resize(image_path, scale): #获得新文件名称 out_path = os.path.splitext(image_path)[0] + "_after" + os.path.splitext(image_path)[-1] with image.open( image_path ) as im: width = int(im.size[0]*scale) height = int(im.size[1]*scale) #resize 设置新尺寸 out = im.resize( (width, height) ) out.save(out_path)def folder_resize(folder_path, scale): dst_files = [] files = os.listdir( folder_path ) for file in files: ext = os.path.splitext(file)[-1] #只支.jpg" alt="python简单代码画图（python+pyqt5实现图片批量缩放工具）" border="0" /> if ext == ".jpg" alt="python简单代码画图（python+pyqt5实现图片批量缩放工具）" border="0" /> dst_files.append(file) #输出路径 out_folder = os.path.join(folder_path, "after") makedir(out_folder) for item in dst_files: try: op = os.path.join( out_folder, item ) with image.open( os.path.join(folder_path, item) ) as im: width = int(im.size[0]*scale) height = int(im.size[1]*scale) out = im.resize( (width, height) ) out.save(op) except filenotfounderror: print("file not found " + item)class mainbody(qwidget): def __init__(self): super(mainbody, self).__init__() self.init() self.m_scale = 1.0 self.m_width = 0 self.m_height = 0 def init(self): grid = qgridlayout() self.setlayout(grid) grid.setspacing(10) self.m_tedit = qtextedit() self.m_tedit.settooltip( u'可以拖拽文件到这里来' ) grid.addwidget(self.m_tedit, 1, 0, 4, 3) self.m_scale_set_btn = qpushbutton( u"设置缩放值" ) self.m_scale_set_btn.clicked.connect( self.set_scale_func ) grid.addwidget( self.m_scale_set_btn, 1, 3 ) self.m_scale_label = qlabel( "1.0" ) grid.addwidget( self.m_scale_label, 2, 3 ) self.m_height_set_btn = qpushbutton( u"设置高度" ) self.m_height_set_btn.clicked.connect( self.set_height_func ) grid.addwidget( self.m_height_set_btn, 3, 3 ) self.m_height_label = qlabel( "0" ) grid.addwidget( self.m_height_label, 4, 3 ) self.m_width_set_btn = qpushbutton( u"设置宽度" ) self.m_width_set_btn.clicked.connect( self.set_width_func ) grid.addwidget( self.m_width_set_btn, 5, 3 ) self.m_width_label = qlabel( "0" ) grid.addwidget( self.m_width_label, 6, 3 ) self.m_file_btn = qpushbutton(u'选择文件') self.m_file_btn.clicked.connect( self.file_func ) self.m_folder_btn = qpushbutton(u'选择文件夹') self.m_folder_btn.clicked.connect( self.folder_func ) self.m_generate_btn = qpushbutton(u'处理') self.m_generate_btn.clicked.connect( self.generate_func ) self.m_clear_btn = qpushbutton(u'清空') self.m_clear_btn.clicked.connect( self.clear_func ) grid.addwidget(self.m_file_btn, 5, 0) grid.addwidget(self.m_folder_btn, 5, 1) grid.addwidget(self.m_generate_btn, 6, 0) grid.addwidget(self.m_clear_btn, 6, 1) self.setgeometry(300,300,300,200) self.setwindowtitle(u"批量图片缩放") self.setwindowicon(qicon('icon.jpg" alt="python简单代码画图（python+pyqt5实现图片批量缩放工具）" border="0" /> self.show() #按照输入的缩放值进行缩放 def set_scale_func(self): text, ok = qinputdialog.gettext( self, 'input scale', u'输入缩放值' ) if ok: try: scale = float( text ) except valueerror: qmessagebox.warning( self, u"设置缩放值", u"输入错误" ) else: self.m_scale = scale self.refresh_setting(0) #根据高度的缩放比例等比例缩放 def set_height_func(self): text, ok = qinputdialog.gettext( self, 'input height', u'输入高度' ) if ok: try: height = int( text ) except valueerror: qmessagebox.warning( self, u"设置高度", u"输入错误" ) else: self.m_height = height self.refresh_setting(2) #根据宽度的缩放比例等比例缩放 def set_width_func(self): text, ok = qinputdialog.gettext( self, 'input width', u'输入宽度' ) if ok: try: width = int( text ) except valueerror: qmessagebox.warning( self, u"设置宽度", u"输入错误" ) else: self.m_width = width self.refresh_setting(1) def file_func(self): filename, ok = qfiledialog.getopenfilename(self, "open file", "c:/users/administrator/desktop", ".jpg" alt="python简单代码画图（python+pyqt5实现图片批量缩放工具）" border="0" /> if ok: self.m_tedit.settext( filename ) size = self.get_image_size( filename ) s,w,h = self.get_current_setting() self.m_width = int(size[0]*s) self.m_height = int(size[1]*s) self.m_height_label.settext( str( self.m_height ) ) self.m_width_label.settext( str( self.m_width ) ) def folder_func(self): filename = qfiledialog.getexistingdirectory(self, "open file", "c:/users/administrator/desktop") self.m_tedit.settext( filename ) def generate_func(self): path = self.get_image_path() if path == none or path == "": qmessagebox.warning( self, u"error", u"未选择文件" ) return elif os.path.exists(path) == false: qmessagebox.warning( self, u"error", u"文件不存在" ) return if os.path.isdir(path): folder_resize( path, self.m_scale ) elif os.path.isfile(path): image_resize( path, self.m_scale ) def clear_func(<
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