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basic02.py
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55 lines (45 loc) · 1.38 KB
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"""
list元素的排序
sort() 默认无参数是从小到大
reversed(list) 整个列表直接反过来，返回值是一个新的list
"""
import random
a_list = []
for i in range(10):
a_list.append(random.randint(0, 200))
print(a_list)
a_list.sort()
print(a_list)
a_list.sort(reverse=True) # 降序，从大到小
print(a_list)
new_list = reversed(a_list) # [12,10,7,9] -> [9,7,10,12]
print(new_list)
"""
一个学校，三个办公室， 八位老师进行随机分配办公室
"""
school = [[], [], []]
teacher_list = list("ABCDEFGH")
for name in teacher_list:
index = random.randint(0,2)
school[index].append(name)
print(school)
"""
字符串表示："", '', """"""
list表示：[]， 可修改
元组的表示：(), 元组的元素不能进行修改，
元组中如果只有一个元素的话，后面加上逗号表明是一个tuple，否则就是元素真实类型
"""
a_tuple = (1, 3.14, "Hello", True)
empty_tuple = ()
empty_tuple2 = tuple()
# 特例
b_tuple = (1) # type = int
c_tuple = (1,) # type = tuple
"""
访问元组tuple
查询的话和list一样使用count， index
"""
print(a_tuple[2])
# a_tuple[1] = "哈哈" 元组的元素不能重新赋值和修改，因为tuple是不可变的
print(a_tuple.count(1)) # 元组中1对象出现的次数是2， 因为Ture在计算机眼中就是1
print(a_tuple.index(3.14))