0531-练习题 os.system

#19、有一个ip.txt，里面每行是一个ip，实现一个函数，ping 每个ip的结果，把结果记录存到ping.txt中，格式为ip:0或ip:1 ，0代表ping成功，1代表ping失败
'''
def ping_ip(source_dir):
    import os
    with open(source_dir,"r") as fp:
        ip_list =fp.readlines()
    result =[]
    for ip in ip_list:
        if os.system("ping"+" "+ip)==0:
            result.append(ip.strip()+":"+"0"+"
")
        elif os.system("ping"+" "+ip)==1:
            result.append(ip.strip()+":"+"1"+"
")
    with open("C:\Users\dell\Desktop\练习\5\ping.txt","w",encoding="utf-8") as fp:
        fp.write("".join(result))
    return result
print(ping_ip("C:\Users\dell\Desktop\练习\5\ip.txt"))
'''
#20、实现DOS命令执行功能，接受输入命令并执行，然后把执行结果和返回码打印到屏幕
#用while循环接受DOS命令
#os.system执行命令
'''
def get_command(command):
    import os
    result =os.system(command)
    if result ==0:
        print("执行成功")
    elif result==1:
        print("执行失败！")
    return result
while 1:
    command =input("请输入要执行的命令：")
    if command =="exit":
        break
    else:
        get_command(command)
'''   
#21、文件访问访问一存在多行的文件，实现每隔一秒逐行显示文本内容的程序，每次显示文本文件的 5行, 
#暂停并向用户提示“输入任意字符继续”，按回车键后继续执行，直到文件末尾。
'''
import os
import os.path
import time
def read_file(source_file):
    import os
    with open(source_file,"r",encoding="utf-8") as fp:
        content=fp.readlines()
    count =1
    for line in content:
        time.sleep(1)
        if count%5==0:
            data =input("输入任意字符继续：")
        print(time.strftime("%Y-%m-%d %h:%M:%S",time.localtime())+line)
        count +=1
print(read_file("C:\Users\dell\Desktop\练习\5\0530.py"))
'''

#习题1：输入一行字符，分别统计出其中的数字、字母、空行和其他字符的个数；
'''
string_data=input("请输入一行字符串：")
digit_num =0
letter_num =0
space_num =0
other_num =0
for i in string_data:
    if i.isdigit():
        digit_num +=1
    elif i.isalpha():
        letter_num +=1
    elif i.isspace():
        space_num +=1
    else:
        other_num +=1
print(digit_num,letter_num,space_num,other_num)
'''
#习题2：求 s= a+aa+aaa+aaaa+aa....aa的s的值，其中a是 一个数字
'''
def sum(a,n):
    if not isinstance(a,int):
        return None
    s=0
    for i in range(1,n+1):
        s+=int(str(a)*i)
    return s
print(sum(2,3))
'''
#习题3：打印文件a.txt的文件路径
'''
def find_file_path(source_path):
    import os
    import os.path
    return os.path.split(source_path)[0]
print(find_file_path("C:\Users\dell\Desktop\练习\5\ip.txt"))
'''
'''
import os
result_list =[]
def find_file(path):
    for root,dirs,files in os.walk(path,topdown=False):
        for file in files:
            if "ip.txt" in file:
                result_list.append(os.path.join(root,file))
    return result_list
print(find_file("C:\Users\dell\Desktop\练习\5\ip.txt"))
'''
#习题4：求一个文件路径下所有文件的数量
'''
def count_file_num(path):
    import os
    import os.path
    os.chdir(path)
    file_count =0
    for i in os.listdir(path):
        if os.path.isfile(path+"\"+i):
            file_count +=1
    return file_count
print(count_file_num("C:\Users\dellDesktop\练习\5"))
'''
#习题5: 找出txt文件的个数：    
'''
def count_txt_file_num(path):
    import os
    import os.path
    os.chdir(path)
    txt_file_count =0
    for i in os.listdir(path):
        if os.path.isfile(path+"\"+i) and os.path.splitext(path+"\"+i)[1]==".txt":
            txt_file_count +=1
    return txt_file_count
print(count_txt_file_num("C:\Users\dellDesktop\练习\5"))
'''
#习题5:查看目录下的所有文件
'''
import os
path ="C:\Users\dellDesktop\练习\5"
os.chdir(path)
for i in os.listdir(path):
    print(i)
'''
#习题6:找出一个目录及子目录下的所有文件名字，不含后缀
'''
import os
filename_list =[]
for root,dirs,files in os.walk("C:\Users\dellDesktop\练习\5",topdown=False):
    for file in files:
        #print(file)
        filename_list.append(os.path.splitext(file)[0])
print(filename_list)
'''
#习题7:输入一个字母判断是星期几，如果第一个字母相同就判断第二个字
'''
week_day = {"m":"星期一","tu":"星期二","w":"星期三","th":"星期四","f":"星期五","sa":"星期六","su":"星期日"}
word = input('请输入星期首字母：')
result ={}
new_result ={}
for key,value in week_day.items():
    if key[0]==word:
        result[key]=value
if len(result)>1:
    two_word = input('请输入星期第二个字母：')
    for key,value in result.items():
        if key[1]==two_word:
            new_result[key]=value
    print(new_result)
else:
    print(result)
'''