幕布斯3226324的代码

9-8 Python函数使用可变关键字参数

def info(**kwargs):

    names = kwargs['names']

    gender_list = kwargs['gender']

    age_list = kwargs['age']

    index = 0

    for name in names:

        gender = gender_list[index]

        age = age_list[index]

        print('name: {}, gender: {}, age: {}'.format(name, gender, age))

        index += 1



info(names = ['Alice', 'Bob', 'Candy'], gender = ['girl', 'boy', 'girl'], age = [16, 17, 15])

2022-09-30 查看完整代码

9-7 Python函数使用可变参数

# Enter a code

def average(*args):

    sum = 0

    if len(args)==0:

        return sum

    for item in args:

        sum += item

        avg = sum / len(args)

        return avg

2022-09-30 查看完整代码

9-6 Python函数使用默认参数

# Enter a code

def greet(n='world'):

    print('hello,'+n+'.')

    

greet()

greet('Alice')

2022-09-30 查看完整代码

9-5 Python函数参数

# Enter a code

def func(a):

    sum1 = 0

    product1 = 1

    if isinstance(a,list):

        for item in a:

            if isinstance(item,int) or isinstance(item,float):

                sum1 += item

        return sum1

    elif isinstance(a,tuple):

        for item in a:

            if isinstance(item,int) or isinstance(item,float):

                product1=product1*item

        return product1

    else:

      print('not right mode')



b = [1,3,5,7,9.5]

c = (2,4,6,8,10.5)

d = [1,'qwe', 2, 4, 3.5, '[,]']

print(func(b), func(c), func(d))

2022-09-30 查看完整代码

9-4 Python递归函数

# coding=utf-8

def sum_1(a):

    sum1=0

#    for i in range(0,a+1):

#        sum1 =sum1+i

#    return sum1

    i=1

    while i<=a:

        sum1 += i

        i += 1

    return sum1

        







def sum_2(a):

    if a==1:

        return 1

    return a+sum_2(a-1)





print(sum_1(100),sum_2(100))

2022-09-29 查看完整代码

9-3 Python函数返回值

# coding=utf-8

def sub_sum(L):

    sum_1=0

    sum_2=0

    for i in L:

        if i%2==0:

            sum_1= sum_1+i

        else:

            sum_2 = sum_2+i

    return sum_1,sum_2



s=[1,2,3,4,5,6,7,8]

print(sub_sum(s))

2022-09-29 查看完整代码

9-2 Python定义函数

# Enter a code

def square_of_sum(L):

    sum=0

    for num in L:

        sum=sum+num*num

    return sum

s = [1, 3, 5, 7, 9, 11]

print(square_of_sum(s))

2022-09-29 查看完整代码

9-1 什么是函数

# Enter a code

def sum_a(b):

    sum1 = 0

    for i in b:

        sum1 = sum1+i

    print(sum1)





a = []

for item in range(1, 101):

    a.append(item*item)

    item = item+1

print(a)

print(sum_a(a))

2022-09-29 查看完整代码

8-5 Python 操作set的其他方法

# Enter a code

s1 = set([1, 2, 3, 4, 5])

s2 = set([1, 2, 3, 4, 5, 6, 7, 8, 9])

s3 = set([])

a = s1.isdisjoint(s2)

if a == 0:

    print('have same element')

    for l1 in s1:

        if l1 in s2:

            s3.add(l1)

    print(s3)

else:

    print('have not same element')

    

flag = s1.isdisjoint(s2)

print(flag)

if not flag:

    for item in s1:

        if item not in s2:

            continue

        print(item)

2022-09-29 查看完整代码

8-4 Python删除set元素

# Enter a code

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

S = set([1, 3, 5, 7, 9, 11])

for item in L:

    if item in S:

            S.remove(item)

    else:

            S.add(item)

print(S)

2022-09-29 查看完整代码

8-3 Python添加set元素

# coding=utf-8

name=[]

name_set=set(name)

print(name_set)

names=['Jenny', 'Ellena', 'Alice', 'Candy', 'David', 'Hally', 'Bob', 'Isen', 'Karl']

name_set.update(names)

print(name_set)



l=[]

l_set=set(l)

print(l_set)

ll=['Jenny', 'Ellena', 'Alice', 'Candy', 'David', 'Hally', 'Bob', 'Isen', 'Karl']



for i in ll:

    l_set.add(i)

print(l_set)

2022-09-29 查看完整代码

8-2 Python读取set元素

# Enter a code

names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena','alice', 'bob', 'candy', 'david', 'ellena']

name_set = set(names)

'alice' in name_set

2022-09-29 查看完整代码

8-1 什么是set

# Enter a code

s=set(['Alice', 'Bob', 'Candy', 'David', 'Ellena'])

print(s)

2022-09-29 查看完整代码

7-7 Python操作dict的其他方法

# Enter a code

d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}

keys= d.keys()

print(keys)

values =d.values()

print(len(d))

2022-09-29 查看完整代码

7-6 Python dict的特点

# Enter a code

d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}

for key in d:

    value =d[key]

    i=0

    for i in range(0,3):

        print(key ,value[i])

        i=i+1

l = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}

for key, value in l.items():

    for score in value:

        print(key, score)

2022-09-29 查看完整代码

7-5 Python删除dict元素

# Enter a code

d = {

    'Alice': 45,

    'Bob': 60,

    'Candy': 75,

    'David': 86,

    'Ellena': 49

}

name ='Alice'

d.pop('Alice')

if name in d.keys():

    d.pop(name)

else:

    print('{} not in d'.format(name))

2022-09-29 查看完整代码

7-3 Python添加dict元素

# Enter a code

d = {

    'Alice': [45],

    'Bob': [60],

    'Candy': [75],

}

l=([50, 61, 66],[80, 61, 66],[88, 75, 90])

n=['Alice','Bob','Candy']

for x in n:

    for z in l:

        d[x].append(z)

print(d)

2022-09-29 查看完整代码

7-4 Python更新dict元素

# Enter a code

d = {

    'Alice': 45,

    'Bob': 60,

    'Candy': 75,

    'David': 86,

    'Ellena': 49

}

old_score =d.get('Alice')

d['Alice'] = 60

print(d)



print(old_score)

2022-09-28 查看完整代码

7-2 Python读取dict元素

# Enter a code

d = {

    'Alice': 45,

    'Bob': 60,

    'Candy': 75,

    'David': 86,

    'Ellena': 49

}

print(d['Alice'])

print(d.get('Bob'))

print(d['Candy'])

print(d.get('Mimi'))

print(d['David'])

2022-09-28 查看完整代码

7-1 什么是dict

# Enter a code

d = {

    'Alice': 45,

    'Bob': 60,

    'Candy': 75,

    'David': 86,

    'Ellena': 49,

    'Gaven': 86

}

print(d)

2022-09-28 查看完整代码

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Python3 入门教程（新版）