keyboard.is_pressed()中断循环

Question

我正在尝试做一些python，这个想法是，当按下键盘上的一个特殊键时--这里是$ and *--它将向我的服务器发出web请求。

它只能工作一次，所以如果我输入$，它就会发送请求，但是如果我再次输入它或者*它不起作用。所以我认为这是因为它破坏了循环，因为keyboard.is_pressed()，而我不知道如何解决这个问题

下面是代码：

import http.client
import keyboard

while True:
    if keyboard.is_pressed('*'):
        conn = http.client.HTTPConnection('server_ip:server_port')
        payload = "{\n\t\"value\" : 0\n}"
        headers = {'Content-Type': "application/json",'Accept': "application/json"}
        conn.request("POST", "/api", payload, headers)
        res = conn.getresponse()
        data = res.read()

    elif keyboard.is_pressed('$'):
        conn = http.client.HTTPConnection('server_ip:server_port')
        payload = "{\n\t\"value\" : 1\n}"
        headers = {'Content-Type': "application/json",'Accept': "application/json"}
        conn.request("POST", "/api", payload, headers)
        res = conn.getresponse()
        data = res.read()

Answer 1

在这种情况下，有两个问题：

首先，我的服务器没有给出任何响应，但是代码想要得到响应，所以它在等待响应。所以我删除了if和elif部分的代码

 res = conn.getresponse()
    data = res.read()

其次，我尝试创建两个同名的http.client.HTTPConnection()，所以它给了我一个错误，所以我将第二个改为conn2，对于headers2和payload2也是如此。

import http.client
import keyboard
import time

while True:
    if keyboard.is_pressed('Page_Up'):
        conn = http.client.HTTPConnection('server_ip:server_port')
        headers = {'Content-Type': "application/json",'Accept': "application/json"}
        payload = "{\n\t\"value\" : 0\n}"
        conn.request("POST", "/api", payload, headers)
        time.sleep(0.5)

    elif keyboard.is_pressed('Page_Down'):
        conn2 = http.client.HTTPConnection('server_ip:server_port')
        headers2 = {'Content-Type': "application/json",'Accept': "application/json"}
        payload2 = "{\n\t\"value\" : 1\n}"
        conn2.request("POST", "/api", payload2, headers2)
        time.sleep(0.5)

Answer 2

在if和elif的末尾添加“继续”如何？

就像这样：

import http.client
import keyboard
import time

keep_looping = True
while keep_looping:
    if keyboard.is_pressed('*'):
        conn = http.client.HTTPConnection('server_ip:server_port')
        payload = "{\n\t\"value\" : 0\n}"
        headers = {'Content-Type': "application/json",'Accept': "application/json"}
        conn.request("POST", "/api", payload, headers)
        res = conn.getresponse()
        data = res.read()
        time.sleep(0.5)

    elif keyboard.is_pressed('$'):
        conn = http.client.HTTPConnection('server_ip:server_port')
        payload = "{\n\t\"value\" : 1\n}"
        headers = {'Content-Type': "application/json",'Accept': "application/json"}
        conn.request("POST", "/api", payload, headers)
        res = conn.getresponse()
        data = res.read()
        time.sleep(0.5)

    elif keyboard.is_pressed('/'):  # Add this in so you can stop the loop when needed. Use any keypress you like.
        keep_looping = False