from 26 English letters （ Case write ）、 Numbers and underscores “_” Characters together form a list .
What happened to this , I've really tried for a long time and haven't worked it out , It doesn't work list Do you ？
Python determines whether it is an even number and outputs the maximum and minimum values
def print_smallest_and_largest
Python+opencv plt Imshow() can display CV2 normally Imshow() is displayed as a white problem
problem ： In image processing
