python String Study log

1. "" , ‘‘, """ """

2. Strings are stored as sequences of characters indexed by integers, starting at zero.

3. To extract a substring, use the slicing operator s[i:j].

4. Strings are concatenated with the plus (+) operator:

g = a + " This is a test"

5. To perform mathematical calculations, strings first have to be converted into a numeric

value using a function such as int() or float(). For example:

z = int(x) + int(y) # z = 79 (Integer +)

6. Non-string values can be converted into a string representation by using the str(),

repr(), or format() function.

时间： 2024-08-02 04:00:53

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