零基础学python-5-9课

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10        "Good example:
>>> myteacher = '小甲鱼'
>>> yourteacher = myteacher-------(2)
>>> myteacher = '黑夜'
>>> print(yourteacher)
Result is 小甲鱼. It means when doing Line 2, your teacher is give the string directly rather than linked to my teacher"

11        When  need to use module, we should import module first. E.g Import Random.
        for functions in the module, it writes as c=random.int(1,10)

12        5e15=5*10^15
        About data type
        type(5e15)=> <class 'float'>
        isinstance(5e15,float)=> True

13        for target/element in expression/list
        Loop part
       
        A String can be seen as collection of alphabets
       
14        Range, generate a list include the first para not the end para
        for I in range(5)=>[0,4]
        for I in range(2,9)=>2~8
        for I in range (1,10, 2)
        the third para is the step

15        Break in loop body
        stop execution and jump out of loop (even while criteria is still true)

16        Continue
        Stop the current executing the remaining lines in this current loop and jump to next round of loop (need to test criteria again)