Python常见的脚本汇总

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lis = [56,12,1,8,354,10,100,34,56,7,23,456,234,-58]

def sortport():

    for i in range(len(lis)-1):

        for j in range(len(lis)-1-i):

            if lis[j]>lis[j+1]:

                lis[j],lis[j+1] = lis[j+1],lis[j]

    return lis

if __name__ == '__main__':

    sortport()

    print(lis)

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def power(x,n):

    s = 1

    while n > 0:

        n=n-1

        s=s*x

    return s

print(power(2,4))

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def power(x,n):

    s = 1

    while n > 0:

        n=n-1

        s=s*x

    return s

print(power(2,4))

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#方法一

def fac():

    num = int(input("请输入一个数字："))

    factorial = 1

    #查看数字是负数，0或者正数

    if num<0:

        print("抱歉，负数没有阶乘")

    elif num == 0:

        print("0的阶乘为1")

    else:

        for i in range(1,num+1):

            factorial = factorial*i

        print("%d的阶乘为%d"%(num,factorial))

if __name__ == '__main__':

    fac()

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#方法二

def fac():

    num = int(input("请输入一个数字："))

    #查看数字是负数，0或者正数

    if num<0:

        print("抱歉，负数没有阶乘")

    elif num == 0:

        print("0的阶乘为1")

    else:

        print("%d的阶乘为%d"%(num,factorial(num)))

def factorial(n):

    result = n

    for i in range(1,n):

        result=result*i

    return result

if __name__ == '__main__':

    fac()

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import os

for d in os.listdir('.'):

    print(d)

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L = ['Hello','World','IBM','Apple']

print([s.lower()for s in L])#整个list所有字符串都变成小写，返回一个list

for s in L:

    s=s.lower()

    print(s)     #将list中每个字符串都变成小写，返回每个字符串

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import os

def print_dir():

    filepath = input("请输入一个路径")

    if filepath == "":

        print("请输入正确的路径")

    else:

        for i in os.listdir(filepath):         #获取目录中的文件及子目录列表

            print(os.path.join(filepath,i))     #把路径组合起来

print(print_dir())

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import os

def show_dir(filepath):

    for i in os.listdir(filepath):

        path = (os.path.join(filepath,i))

        print(path)

        if os.path.isdir(path):               #isdir()判断是否是目录

            show_dir(path)                    #如果是目录，使用递归方法

filepath = "E:\BaiduYunDownload"

show_dir(filepath)

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import os

def print_dir(filepath):

    for i in os.listdir(filepath):

        path = os.path.join(filepath,i)

        if os.path.isdir(path):                   #isdir()判断是否是目录

            print_dir(path)                       #如果是目录，使用递归方法

        if path.endswith(".html"):

            print(path)

filepath = "E:\BaiduYunDownload"

print_dir(filepath)

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dict1 = {"A":"a","B":"b","C":"c"}

dict2 = {y:x for x,y in dict1.items()}

print(dict2)

#输出结果为{'a': 'A', 'b': 'B', 'c': 'C'}

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for i in range(1,10):

    for j in range(1,i+1):

        print('%d x %d = %d \t'%(j,i,i*j),end='')   #通过指定end参数的值，可以取消在末尾输出回车符，实现不换行。

    print()

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num = ["harden","lampard",3,34,45,56,76,87,78,45,3,3,3,87686,98,76]

print(num.count(3))

print(num.index(3))

for i in range(num.count(3)):      #获取3出现的次数

    ele_index = num.index(3)        #获取首次3出现的坐标

    num[ele_index]="3a"            #修改3为3a

print(num)

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L = ["James","Meng","Xin"]

for i in range(len(L)):

    print("Hello.%s"%L[i])

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

list2 = [5,6,10,17,11,2]

list3 = list1 + list2

print(list3)              #不去重只进行两个列表的组合

print(set(list3))         #去重，类型为set需要转换成list

print(list(set(list3)))

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import random

list1=[]

for i in range(65,91):

    list1.append(chr(i))        #通过for循环遍历asii追加到空列表中

for j in range (97,123):

    list1.append(chr(j))

for k in range(48,58):

    list1.append(chr(k))

ma = random.sample(list1,6)

print(ma)                      #获取到的为列表

ma = ''.join(ma)              #将列表转化为字符串

print(ma)

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num = float(input('请输入一个数字：'))

num_sqrt = num ** 0.5

print('%0.2f 的平方根为%0.2f'%(num,num_sqrt))

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#方法一

def is_number(s):

    try:

        float(s)

        return  True

    except ValueError:

        pass

    try:

        import unicodedata

        unicodedata.numeric(s)

        return  True

    except(TypeError,ValueError):

        pass

    return False

t="a12d3"

print(is_number(t))

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#方法二

t = "q123"

print(t.isdigit())   #检测字符串是否只由数字组成

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#方法三

t = "123"

print(t.isnumeric())   #检测字符串是否只由数字组成,这种方法是只针对unicode对象

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#方法一

num = int(input('请输入一个数字：'))

if (num % 2) == 0:

    print("{0}是偶数".format(num))

else:

    print("{0}是奇数".format(num))

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#方法二

while True:

    try:

        num = int(input('请输入一个整数：'))      #判断输入是否为整数，不是纯数字需要重新输入

    except ValueError:

        print("输入的不是整数！")

        continue

    if (num % 2) == 0:

        print("{0}是偶数".format(num))

    else:

        print("{0}是奇数".format(num))

    break

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#方法一

year = int(input("请输入一个年份："))

if (year % 4) == 0:

    if (year % 100) == 0:

        if(year % 400) ==0:

            print("{0}是闰年".format(year))       #整百年能被400整除的是闰年

        else:

            print("{0}不是闰年".format(year))

    else:

        print("{0}是闰年".format(year))           #非整百年能被4整除的为闰年

else:

    print("{0}不是闰年".format(year))

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#方法二

year = int(input("请输入一个年份："))

if (year % 4) == 0 and (year % 100)!=0 or (year % 400) == 0:

    print("{0}是闰年".format(year))

else:

    print("{0}不是闰年".format(year))

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#方法三

import calendar

year = int(input("请输入年份："))

check_year=calendar.isleap(year)

if check_year == True:

    print("%d是闰年"%year)

else:

    print("%d是平年"%year)

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N = int(input('输入需要对比大小的数字的个数：'))

print("请输入需要对比的数字：")

num = []

for i in range(1,N+1):

    temp = int(input('请输入第%d个数字：'%i))

    num.append(temp)

print('您输入的数字为：',num)

print('最大值为：',max(num))