python小玩意二

#创建一个列表
list1 = ['a','b','c','d']

list1.append('e')
print(list1)
#创建一个列表
list1 = ['a','b','c','d']

list1.append(2, 'e')
print(list1)
#创建一个列表
list1 = ['a','b','c','d']

list1.pop()
print(list1)
#创建一个列表
list1 = ['a','b','c','d']

list1.pop(2)
print(list1)
#创建一个列表
list1 = ['a','b','c','d']

del list1[2]
print(list1)

del list1
#创建一个列表
list1 = ['a','b','c','d']

list1.[1] = 'x'
print(list1)
#创建一个列表
list1 = ['a','b','c','d']
#根据位置修改元素
list1[1] = 'x'
print(list1)
#创建一个列表
list1 = ['a','b','c','d']
#获取并输出'b'元素的位置
print(list1.index('b'))
#删除三个元素'c'
list1 = ['a','b','c','d','a','b','c','d','b','c']
#删除末尾'c'
list1.pop()
#指定删除元素'c'
list1.remove('c')
#用del删除元素'c'
del list1[list1.index('c')]
print(list1)
list1 = ['a','b','c','d','a','b','c','d','b','c']
for i in list1:
    if i =='<'':
        list1.remove(i)
 print(list1)

tup = (20)
#查看类型
print(type(tup))
tup1 = (20,)
peint(type(tup1))

tup = ('a', 'b', 'c', 'd')
tup[1] = 'x'
print(tup1)

dict1 = {'name':'jack', 'age':'20', 'sex':'男'}
#通过字典的键获取字典的值
print(dict1['age'])
print(dict1['sex'])

dict1 = {'name':'jack', 'age':'20', 'sex':'男'}
#通过字典的键修改字典的值
dict1['age'] = 30
print(dict1)

dict1 = {'name':'jack', 'age':'20', 'sex':'男'}
#通过字典的键添加字典的值
dict1['tel'] = 123456
print(dict1)

dict1 = {'name':'jack', 'age':'20', 'sex':'男'}
#通过字典的键删除字典的值
del dict1['age']
print(dict1)

dict1 = {'name':'jack', 'age':'20', 'sex':'男'}
#清空
dict1.clear()
print(dict1)

dict1 = {'name':'jack', 'age':'20', 'sex':'男'}
del dict1

set1 = {1,2,3,1,2,4}
print(set1)

set1 = {'a','b','c','d'}
print(set1)

#自带的会进行一个排序0~30左右 负数不行
set1 ={3,6,1,7,4}
print(set1)
set2 ={30,60,10,70,40}
print(set2)

set1 = {10,20,30}
set1.add(4)
print(set1)

#集合删除指定元素 remove
set1 = {1,2,3,4,5,6}
set1.remove(2)
print(set1)

#集合中随机删除元素 pop
set1 = {'a','b','c','d'}
set1.pop()
print(set1)
#集合元素是0~30，pop会删除首位
set2 = {3,1,5,2,6,0}
set2.pop()
print(set2)


#集合中随机删除元素 pop
set1 = {'a','b','c','d''e'}
set1.pop()
print(set1)
set1 = {1,2,3,4,0,5,6}
set1.pop()
print(set1)


x = 4
y = 5
#判断x是否大于y
if x > y:
     print{"x大于y"}
#判断x是否等于y
elif x == y:
     print("x等于y")
#判断x是否小于y
else:
     print("x小于y")

#设置循环条件
sum = 0
i = 1
while i < 100:
    sum += i
    i += 1
print("1加到99和：", sum)

x = 0
while True:
     x += 1
     print(x)

x = 1
while x < 10:
   x += 1
   if x == 7:
      #跳出循环
      break
    print(x)

x = 1
while x < 10:
   x += 1
   if x == 7:
      #跳出本次循环
      continue
    print(x)

#创建一个序列
x = ['a','b','c','d']
#遍历列表的元素
for i in x:
    print(i)

#生成0到4的数列
for a in range(5):     #[0,5) 前闭后开
    print('a =',a)
#生成5到9的数列
for b in range(5,10):    #[5,10) 前闭后开
      print('b =',b)
#生成0到15的数列,步长为3
for c in range(0,15,3):  #[0,15) 前闭后开 步长为3
      print('c =', c)

#range(2,22,2)  2,4,6,8,10,12,14,16,18,20
 for i in range(22,-10,-2):
       print(i)

for i in range(101):
    if i == 72:
          break
     print(i)



#创建一个函数
def func_name():
      print("我是xxx")
#调用函数
func_name()

def add_number(a,b):
       area = a * b
       print(area)
#调用函数
add_number(5,6)
add_number(2,6)