【python】常用第三方模块

from PIL import Image

# 打开一个jpg图像文件，注意是当前路径:
im = Image.open(‘test.jpg‘)
# 获得图像尺寸:
w, h = im.size
print(‘Original image size: %sx%s‘ % (w, h))
# 缩放到50%:
im.thumbnail((w//2, h//2))
print(‘Resize image to: %sx%s‘ % (w//2, h//2))
# 把缩放后的图像用jpeg格式保存:
im.save(‘thumbnail.jpg‘, ‘jpeg‘)

from PIL import Image, ImageFilter

# 打开一个jpg图像文件，注意是当前路径:
im = Image.open(‘test.jpg‘)
# 应用模糊滤镜:
im2 = im.filter(ImageFilter.BLUR)
im2.save(‘blur.jpg‘, ‘jpeg‘)

from PIL import Image, ImageDraw, ImageFont, ImageFilter

import random

# 随机字母:
def rndChar():
    return chr(random.randint(65, 90))

# 随机颜色1:
def rndColor():
    return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))

# 随机颜色2:
def rndColor2():
    return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))

# 240 x 60:
width = 60 * 4
height = 60
image = Image.new(‘RGB‘, (width, height), (255, 255, 255))
# 创建Font对象:
font = ImageFont.truetype(‘arial.ttf‘, 36)
# 创建Draw对象:
draw = ImageDraw.Draw(image)
# 填充每个像素:
for x in range(width):
    for y in range(height):
        draw.point((x, y), fill=rndColor())
# 输出文字:
for t in range(4):
    draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
# 模糊:
image = image.filter(ImageFilter.BLUR)
image.save(‘code.jpg‘, ‘jpeg‘)

>>> r = requests.post(‘https://accounts.douban.com/login‘, data={‘form_email‘: ‘abc@example.com‘, ‘form_password‘: ‘123456‘})

>>> upload_files = {‘file‘: open(‘report.xls‘, ‘rb‘)}
>>> r = requests.post(url, files=upload_files)

from tkinter import *

class Application(Frame):
    def __init__(self,master=None):
        Frame.__init__(self,master)
        self.pack()
        self.createWidgets()
        
    def createWidgets(self):
        self.helloLabel=Label(self,text=‘Hello,World!‘)
        self.helloLabel.pack()
        self.quitButton = Button(self,text=‘Quit‘,command=self.quit)
        self.quitButton.pack()
        
if __name__ == ‘__main__‘:
        app=Application()
        app.master.title(‘Hello World!‘)
        app.mainloop()