一些基础的python小程序

1.求下列数奇偶分数：

list1 = [1,2,3,4,5,6,7,8,9,10]

# 先创建两个空列表

jishu = []

oushu = []

# 使用for循环迭代list1一一取出进行判断

for i in list1:

# 取出的数除以2的余数等于0加入偶数列表，否则是奇数

if i % 2 == 0:

oushu.append(i)

else:

jishu.append(i)

# 打印新列表

print(jishu)

print(oushu)

2.求1-100的偶数和：

sum = 0

for i in range(0,101):

if i % 2 ==0:

sum += i

print(sum)

3.类和对象 ：

class Cat:

"""

定义一个猫类

"""

def __init__(self, name, age, color):

self.name = name

self.age = age

self.color = color

print("大家好，我叫{},我现在{}岁,我的毛色是{}".format(self.name, self.age, self.color))

def run(self):

print("我会跑步")

def sleep(self):

print("我会睡觉")

def say(self):

print("我会叫")

a_cat = Cat("小咪", 2, "黑色")

a_cat.run()

a_cat.sleep()

a_cat.say()

4.去重 ：

# 1.方法一

list1 = [3,3,3,4,5,3]

set1 = set(list1)

print(set1)

# 2.方法2

new_list = [i for i in set1]

print(new_list)

# 3.方法3

list1 = [3,3,3,4,5,3]

set1 = set(list1)

new_list = []

for i in set1:

new_list.append(i)

print(new_list)

5. if ，elif，else简单使用：

score = int(input("请输入分数："))

if score > 90:

print("A")

elif score > 80:

print("B")

elif score > 70:

print("C")

elif score > 60:

print("D")

else:

print("E")

6.算数运算：

class calculation():

"""

算术运算

"""

def __init__(self, A, B):

self.A = A

self.B = B

def sum(self):

"""

计算加法

"""

return self.A + self.B

def sub(self):

"""

计算减法

"""

return round((self.A - self.B),2)

def multi(self):

"""

计算乘法

"""

return self.A * self.B

def div(self):

"""

计算除法

"""

try:

return round((self.A / self.B),2)

except ZeroDivisionError:

return("0除错误,分母不能为0！")

c = calculation(10, 0)

print(c.sum())

print(c.sub())

print(c.multi())

print(c.div())