2021 year 3 month Python Analysis of real questions of level 2 programming test

choice question （ common 25 topic , Each question 2 branch , common 50 branch ）

1、 For dictionaries infor = {"name":"tom","age":13,"sex":"male"}, Delete “age”:13 The correct operation of key value pairs is

A、del infor['age']

B、del infor["age":13]

C、del infor

D、infor.clear()

answer ：A

Test point analysis ： Check dictionary operation , Delete an element from the dictionary , It is deleted according to the key of the dictionary , So the answer A,D The option is to clear the entire dictionary ,BC Is the wrong format

2、 use python Statement calculation ： The length and width of the rectangle are 4 and 5, Then the circumference of the rectangle is

A、

B、