CSC108H1 Lecture Notes - Empty String, Substring
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CSC108H1 Full Course Notes
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String comparison: you can use the comparison operators on strings, the comparison will be made alphabetically, an ordering is defined even for non-alphabetic characters, ex. Indexing strings: s[1], 1 = integer: allows you to extract a single character, the first character is at index 0, a negative index means to count backwards from the end, always return a new object. Slicing strings: s[left:right: allows you to extract a substring in one step, always returns a new object, the lower bound is inclusive, but the upper bound is not, if omitted, left defaults to 0, right to len(s) >>> s[3] = x # operation not allowed, string immutable. >>> print s, , s2 llo hello. Call methods using the same notation as calling a function in a module: Calling methods: because you provide the string using dot notation, you don"t need to pass it as an argument: Villain. capitalize(villain) # redundant: a method may have parameters if it needs additional information:
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