M2

# 1
print(sum(range(1,101)))
# 2
a = 1
def func():
    global a
    a =2
    print(a)
func()

# 4、字典如何删除键和合并两个字典
dict = {
    'name':'A',
    'age':18
}
dict2 = {
    'score':100,
    'sex':'nv'
}

# dict.pop('name') #删除方法1
# del dict['name']   # 删除方法2
dict.update(dict2)
print(dict)

# 6 列表去重方法
li = [1,2,1,2,3,4,5,1]
print(list(set(li)))

# 7 fun(*args,**kwargs)中的*args,**kwargs什么意思？
print('*'*50)
def foo(*args,**kwargs):
    print('args=',args)
    print('kwargs=',kwargs)
print('**********************')
if __name__=='__main__':
    foo(1,2,3)
    foo(a=1,b=2,c=3)
    foo(1,2,3,a=1,b=2,c=3)
    foo(1,'b','c',a=1,b='b',c='c')

# 13
li = [1,2,3,4,5]
def func(x):
    return x**2
map(func,li)
print([i for i in map(func,li) if i > 10])

# 14、python中生成随机整数、随机小数、0—1之间小数方法
import random
print(random.randint(1,100))#随机整数
print(random.random()) # 0-1之间随机小数
print(random.uniform(100,999))# 一个范围的随机小数
a = random.uniform(100,999)
print(round(a,2))
# 15
s = 'abc
efc'
print(r'abc
edf')

# 16
import re
s1 = '<div class="nam">中国</div>'
res = re.findall(r'<div class=".*">(.*?)</div>',s1)
print(res)

# 18
# select DISTINCT name from student;
# 19
# ps top cat grep tar ls pwd uname free vi

# 21
# 可变长数据类型 list 字典
# 不可变长数据类型 元祖set 字符串 数值型

# 58、使用pop和del删除字典中的”name”字段，dic={“name”:”zs”,”age”:18}
dict = {
    'name':'zs',
    'age':19
}
# dict.pop('name')
del dict['name']
print(dict)

# 69、请将[i for i in range(3)]改成生成器
li = [i for i in range(3)]
print(li)
li = (i for i in range(3))
print(li)

# 70、a = “  hehheh  “,去除收尾空格
a = "   hehd  heh     "
# print(a.strip())# 去除两边空格
# print(a.replace(' ','')) #去除中间空格
# print(''.join(a.split()))

# 71、举例sort和sorted对列表排序，list=[0,-1,3,-10,5,9]
print('*'*50)
list=[0,-1,3,-10,5,9]
print(list.sort())
li2 = sorted(li,reverse=False)
print(id(li))
print(id(li2))

# 72、对list排序foo = [-5,8,0,4,9,-4,-20,-2,8,2,-4],使用lambda函数从小到大排序
foo = [-5,8,0,4,9,-4,-20,-2,8,2,-4]
lambda x:x