同样的程序在notepad++上运行和在pycharm上运行结果为什么不一样

还是之前编写的程序，今天开始用notepad++调用之前的程序运行了一下，居然发现运行结果不一样。为。。。。。撒？
以下是代码：

import socket
import re
import multiprocessing

def service_client(client_socket):

    data = client_socket.recv(1024)
    recv_data=data.decode("utf-8")
    print(recv_data)
    #GET /index.html HTTP/1.1
    ret=re.match(r"[^/]+ /([\S]+\s|\s)",recv_data)
    file_n="index.html"
    if ret: #判断正则筛取的结果
        result=ret.group(1).strip() # 开始我想是不是因为文件名有空格，所以说找不到，后来发现即便是这样改了后面的结果还是一样。？？？
        if result!="":
            print(result)
            file_n=result
    else:
        print("代码有误！")
    try:
        with open(file_n,"rb") as f:
            content=f.read()
            f.close()
    except Exception as r:
        print(r)
        content = "
file not found<\h1>".encode("utf-8")

    header="HTTP/1.1 200 OK\r\n"
    empty="\r\n"
    response=(header+empty).encode('utf-8')
    client_socket.send(response)
    client_socket.send(content)
    #print(content)
    client_socket.close()
    print("client_socket.close()已调用")

def main():
    tcp_socket=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    local_addr=("127.0.0.1",7890)
    tcp_socket.bind(local_addr)
    tcp_socket.listen(128)
    while True:
        client_socket, client_addr = tcp_socket.accept()
        p=multiprocessing.Process(target=service_client,args=(client_socket,))
        p.start()
        # p.join()
    tcp_socket.close()
if __name__ == "__main__":
    main()

以下是在pycharm中的运行结果：

"D:\new file\python-3.6.4 install\python.exe" "D:/new file/正则和http协议/正则和http协议2.py"
GET / HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0


client_socket.close()已调用
GET /css/main.css HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: text/css,*/*;q=0.1
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


css/main.css
client_socket.close()已调用
GET /css/reset.css HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: text/css,*/*;q=0.1
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


css/reset.css
client_socket.close()已调用
GET /images/logo.png HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


images/logo.png
client_socket.close()已调用
GET /images/slide.jpg HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


images/slide.jpg
client_socket.close()已调用
GET /images/adv01.jpg HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


images/adv01.jpg
client_socket.close()已调用
GET /images/adv02.jpg HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


images/adv02.jpg
client_socket.close()已调用
GET /images/goods.jpg HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


images/goods.jpg
GET /images/icons.png HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/css/main.css
Cache-Control: max-age=0

GET /images/banner01.jpg HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0



images/icons.png
images/banner01.jpg
GET /images/banner02.jpg HTTP/1.1
Host: 127.0.0.1:7890
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: image/webp,*/*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: keep-alive
Referer: http://127.0.0.1:7890/
Cache-Control: max-age=0


images/banner02.jpg
client_socket.close()已调用
client_socket.close()已调用
client_socket.close()已调用
client_socket.close()已调用

进程已结束,退出代码1

下面是在notepad++中的运行结果：

身为小白的我就纳闷了，为啥告诉我找不到文件？？？？？？
是因为里面要传送的html文件用的是相对路径吗？