找不到指定的WinError2文件（Python 3.9）

我对python了解不多，我需要制作一个UDP P2P文件共享应用程序/代码。以前从未使用过python，所以请原谅我缺乏知识。我需要获得此错误的帮助：

    `FileNotFoundError: [WinError 2] The system cannot find the file specified`
   

这是我的server.py代码：

import os
import socket
import time

host = input("Host Name: ")
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


try:
    sock.connect((host, 22222))
    print("Connected Successfully")
except:
    print("Unable to connect")
    exit(0)


file_name = sock.recv(100).decode()
file_size = sock.recv(100).decode()


with open("./rec/" + file_name, "wb") as file:
    c = 0
  
    start_time = time.time()

    
    while c <= int(file_size):
        data = sock.recv(1024)
        if not (data):
            break
        file.write(data)
        c += len(data)

   
    end_time = time.time()

print("File transfer Complete. Total time: ", end_time - start_time)


sock.close()

导入操作系统
导入套接字
导入时间
主机=输入（“主机名：”）
sock=socket.socket（socket.AF\u INET，socket.sock\u流）
尝试：
sock.connect（（主机，22222））
打印（“连接成功”）
除：
打印（“无法连接”）
出口（0）
文件名=sock.recv（100）.decode（）
文件大小=sock.recv（100）.decode（）
打开（“./rec/”+文件名，“wb”）作为文件：
c=0
开始时间=time.time（）
而您遇到的错误消息是由于找不到文件。很可能是
client.py
文件报告了错误。在尝试打开文件之前，应检查文件是否存在

file_name = input("File Name: ")
# Ensure the file exists
if not os.path.isfile(file_name):
    print(f"File not found: {file_name}")
    exit(0)

由于您从不同的源进行了复制和粘贴，因此代码中存在许多错误。下面的代码应该适合您，我添加了注释来解释它是如何工作的

如果有什么需要进一步解释，请在评论中告诉我

server.py：

import os
import socket
import time

SERVER_HOST = "0.0.0.0"
SERVER_PORT = 22222
BUFFER_SIZE = 1024 # Receive 1024 bytes at a time (1kb)
SEPARATOR = ":::::"

SERVER_FOLDER = "./rec/" # Location to save file

# Create the server socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Bind the socket to the host address and port
sock.bind((SERVER_HOST, SERVER_PORT))

# Enable server to accept connections
sock.listen()
print(f"Server listening {SERVER_HOST}:{SERVER_PORT}")

# Accept client connection
client_socket, address = sock.accept()
print(f"Client {address} connected.")

# Receive the file information
received = client_socket.recv(BUFFER_SIZE).decode()

# Split the string using the separator
file_name, file_size = received.split(SEPARATOR)

print(f"File name: '{file_name}'")
print(f"File size: '{file_size}'")

# Set the path where the file is to be saved
save_path = os.path.join(SERVER_FOLDER, file_name)

with open(save_path, "wb") as file:
    bytes_received = 0
    start_time = time.time()
    while True:
        data = client_socket.recv(BUFFER_SIZE)
        if not (data):
            break
        file.write(data)
        bytes_received += len(data)
    end_time = time.time()

print(f"File transfer Complete. {bytes_received} of {file_size} received. Total time: {end_time - start_time}")

# Close the client socket
client_socket.close()

# Close the server socket
sock.close()

import os
import socket
import time

SERVER_PORT = 22222
BUFFER_SIZE = 1024 # Send 1024 bytes at a time (1kb)
SEPARATOR = ":::::"

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = socket.gethostname()

print(f"Connecting to {host}:{SERVER_PORT}")
sock.connect((host, SERVER_PORT))
print("Connected.")

file_name = input("File Name: ")

# Ensure the file exists
if not os.path.isfile(file_name):
    print(f"File not found: {file_name}")
    exit(0)

# Get the file size
file_size = os.path.getsize(file_name)

# Send file_name and file_size as a single string
sock.send(f"{file_name}{SEPARATOR}{file_size}".encode())

with open(file_name, "rb") as file:
    c = 0
    start_time = time.time()
    while c <= file_size:
        data = file.read(BUFFER_SIZE)
        if not (data):
            break
        sock.sendall(data)
        c += len(data)
    end_time = time.time()

print("File Transfer Complete. Total time: ", end_time - start_time)

sock.close()

客户端.py：

import os
import socket
import time

SERVER_HOST = "0.0.0.0"
SERVER_PORT = 22222
BUFFER_SIZE = 1024 # Receive 1024 bytes at a time (1kb)
SEPARATOR = ":::::"

SERVER_FOLDER = "./rec/" # Location to save file

# Create the server socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Bind the socket to the host address and port
sock.bind((SERVER_HOST, SERVER_PORT))

# Enable server to accept connections
sock.listen()
print(f"Server listening {SERVER_HOST}:{SERVER_PORT}")

# Accept client connection
client_socket, address = sock.accept()
print(f"Client {address} connected.")

# Receive the file information
received = client_socket.recv(BUFFER_SIZE).decode()

# Split the string using the separator
file_name, file_size = received.split(SEPARATOR)

print(f"File name: '{file_name}'")
print(f"File size: '{file_size}'")

# Set the path where the file is to be saved
save_path = os.path.join(SERVER_FOLDER, file_name)

with open(save_path, "wb") as file:
    bytes_received = 0
    start_time = time.time()
    while True:
        data = client_socket.recv(BUFFER_SIZE)
        if not (data):
            break
        file.write(data)
        bytes_received += len(data)
    end_time = time.time()

print(f"File transfer Complete. {bytes_received} of {file_size} received. Total time: {end_time - start_time}")

# Close the client socket
client_socket.close()

# Close the server socket
sock.close()

import os
import socket
import time

SERVER_PORT = 22222
BUFFER_SIZE = 1024 # Send 1024 bytes at a time (1kb)
SEPARATOR = ":::::"

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = socket.gethostname()

print(f"Connecting to {host}:{SERVER_PORT}")
sock.connect((host, SERVER_PORT))
print("Connected.")

file_name = input("File Name: ")

# Ensure the file exists
if not os.path.isfile(file_name):
    print(f"File not found: {file_name}")
    exit(0)

# Get the file size
file_size = os.path.getsize(file_name)

# Send file_name and file_size as a single string
sock.send(f"{file_name}{SEPARATOR}{file_size}".encode())

with open(file_name, "rb") as file:
    c = 0
    start_time = time.time()
    while c <= file_size:
        data = file.read(BUFFER_SIZE)
        if not (data):
            break
        sock.sendall(data)
        c += len(data)
    end_time = time.time()

print("File Transfer Complete. Total time: ", end_time - start_time)

sock.close()

导入操作系统
导入套接字
导入时间
服务器端口=22222
缓冲区大小=1024#一次发送1024字节（1kb）
分隔符=“：：：：”
sock=socket.socket（socket.AF\u INET，socket.sock\u流）
host=socket.gethostname（）
打印（f“连接到{host}:{SERVER\u PORT}”）
sock.connect（（主机、服务器\端口））
打印（“已连接”）
文件名=输入（“文件名：”）
#确保该文件存在
如果不是os.path.isfile（文件名）：
打印（f“未找到文件：{File_name}”）
出口（0）
#获取文件大小
file\u size=os.path.getsize（文件名）
#将文件名和文件大小作为单个字符串发送
send（f“{file\u name}{SEPARATOR}{file\u size}”.encode（））
打开（文件名为“rb”）作为文件：
c=0
开始时间=time.time（）
而c你已经为
server.py
和
client.py
发布了相同的代码，哈哈，我的错。谢谢，已修复。请编辑您的问题以包含异常的完整回溯。这会告诉你问题出在哪里。根据你的代码。我应该如何运行它。我试着输入了我的文件名，但我不明白“/rec/”是什么意思。它有什么作用？获取未找到“/rec/”目录的错误。再说一遍，我对python一无所知。谢谢。“./rec/”将是服务器文件所在位置中名为“rec”的目录。我直接从你在问题中提供的代码中获取。