syntax: string[start:stop] stop not included

В срезах последний индекс игнорируется

string[start:stop:step] string[::2] from start with one step string[::-1] it will show revered string!!!

len(s) - 1 # amount of symbols
len(s) - 1 # amount of symbols
s[len(s) - 1] # show last sym right away
"panda"[3] # we can use index ra in strings
 
# How to mutate the inmutable string
s = 'hello python'
s2 = "H" + s[1:]

Reference:

  • Добрый Python. Балакирев