新手初学必备10个Python常用内置函数(2)

person = dict(name='Alice',age=25)#输出:{'name':'Alice'，'age':25}print(person)

12.set():创建一个集合对象

numbers = [1,2,3,2,1]unique_numbers = set(numbers)print(unique_numbers) #输出:{1,2,3}

13.sum(:返回可迭代对象的总和

numbers = [1, 2, 3, 4, 5]total = sum(numbers)print(total) # 输出:15

14.max(:返回可迭代对象的最大值

numbers = [1, 2,3, 4, 5]maximum = max(numbers)print(maximum) # 输出:5

15.min():返回可迭代对象的最小值

numbers = [1,2,3,4,5]minimum = min(numbers)print(minimum) #输出:1

16.abs():返回数值的绝对值

number = -42 absolute = abs(number)print(absolute) # 输出:42

17.replace():替代字符串中的某一些子串为另一些字

st ="i want a apple"

st = st.replace("apple","mice")print(st)# 输出:mice i want a

18.round():返回一个数值的四舍五入值

number = 3.14159rounded = round(number, 2)print(rounded)#输出:3.14

19.Strip():去除字符串前面和后面的空格

st =" hellost = st.strip()print(st+"end")# 输出:helloend

20.sorted():返回一个排序后的可迭代对象

numbers = [5,2,4, 1,3]sorted_numbers = sorted(numbers)print(sorted_numbers)..#.输出.[1, 2,3,4,5]