Because I have some string interception operations when coding, but I can’t always remember them. I have to search the Internet every time. It’s a bit silly, so some simple examples of Python intercepting strings are included below. You can refer to them when programming. a bit.

str = '0123456789'
print str[0:3] #Intercept the characters from the first to the third
print str[:] #Intercept all characters of the string
print str[6:] #Intercept the seventh character to the end
print str[:-3] #Intercept from the beginning to before the third last character
print str[2] #Intercept the third character
print str[-1] #Intercept the penultimate character
print str[::-1] #Create a string with the reverse order of the original string
print str[-3:-1] #Intercept the characters before the penultimate third digit and the penultimate first digit
print str[-3:] #Intercept the third last digit to the end
print str[:-5:-3] #Reverse sequence interception