Python built-in function accumulation

Note: At present, all content, pure small white in the small in vain to write, there may be objections, with the later study, will supplement the change perfect!

------personally think that function parameters can be understood as functions of equipment, a variety of equipment, the effect is not the same drop ~ ~ ~

1. How to look at the data type of a variable type (variable name)

str = ' Xiaohei '

Print (Type (str))

<class ' str ' >

2. Preserve the number of decimal digits round (variable, number of digits)

Score = 89.39231

Round (score,2)

89.39

3.range (Start,stop,step) does not contain end from start to finish, default 0 step size default 1 based on step output

Range (0,3,1)

0,1,2

Python built-in function accumulation