Your QQ picture (or Weibo avatar) plus the upper right corner of the red numbers, similar to the micro-channel that the number of unread messages prompt effect

First, install PIL library in pytho3 has been called Pillow, installation command: pip install Pillow

But in the name of the application you want to import also called: PIL

 

 

 In the digital image can be newly generated by the random number, so it needs to import a random

Then you can write code directly defined functions

 

 

 Perform functions

 

 

 The complete code

PIL Import Image from, ImageDraw, ImageFont, ImageColor 
Import Random 
DEF Put_Add_Num (PIC, NUM): 

   IM = Image.open (PIC) # open the picture 
   draw = ImageDraw.Draw (im) # create draw objects 
   x, y = im.size # get picture size 
   font = ImageFont.truetype ( "arial.ttf", 50) # set the font size 
   fillcolor = ImageColor.colormap.get ( "red") # set the font color 
   draw.text ((x - 30,40), "% s"% num, font = font, fill = fillcolor) # add text 
   im.save ( "D: \\ \\ Test_script image.png") 

IF the __name__ == "__main__": 
   PIC = "D: \\ Test_script \\ Pic \\ WeChat.jpg "# image path 
   num = random.randint (1,10) # add random integer from 1 to 10 
   Put_Add_Num (pic, num) 

finally stepped on to talk about the pit 
1, save to save the image best to use png format, or if the original picture is png format will error: OSError:　　cannot write mode RGBA as JPEG　　
　　This is because: PNG RGBA there are four channels, while JPEG is RGB three channels, so when BMP PNG turn the channel does not know how to do A, will generate an error. 
　　The best solution is to give up a channel saved as png format, or increase if the judge sentences 
2, the escape character path to save the image of the original path and the new picture of needs: '\' 
3, get a picture of coordinates PIl consistent starting coordinates for the upper-left corner of the picture (0,0) 
4, hexadecimal color specifier, defined as "#rgb" or "#rrggbb". For example, "# ff0000" represents pure red 
5, ImageDraw module provides 140 standard color name, Xwindow system and most web browsers support these colors. Color names are not case sensitive. For example, "red" and "Red" expressed pure red.