s = "Kilogramm"
print(len(s)) # 9
print(s[:4]) # kilo
print(s[4:8]) # gram
print(s[2]) # l -> бірақ мысалда "r" деп тұр, сондықтан 3-индексті аламыз
print(s[3:6]) # ogr -> "log" деп алу үшін 1–3 индекстер
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