ADD file via upload

KeyPressMoudle.py

@@ -0,0 +1,18 @@
+import pygame
+
+def init():
+    pygame.init()
+    win = pygame.display.set_mode((400, 400))
+
+def getKey(keyName):
+    ans = False
+    for eve in pygame.event.get(): pass
+    keyInput = pygame.key.get_pressed()
+    myKey = getattr(pygame,'K_{}'.format(keyName))
+    if keyInput[myKey]:
+        ans = True
+    pygame.display.update()
+    return ans
+
+if __name__ == '__main__':
+    init()

main.py

@@ -0,0 +1,87 @@
+# This is a sample Python script.
+
+# Press Shift+F10 to execute it or replace it with your code.
+# Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings.
+
+
+import logging
+import time
+import cv2
+from djitellopy import tello
+import KeyPressMoudle as kp  # 用于获取键盘按键
+from time import sleep
+
+def getKeyboardInput(drone, speed, image):
+    lr, fb, ud, yv = 0, 0, 0, 0
+    key_pressed = 0
+    if kp.getKey("e"):
+        cv2.imwrite('D:/snap-{}.jpg'.format(time.strftime("%H%M%S", time.localtime())), image)
+    if kp.getKey("UP"):
+        Drone.takeoff()
+    elif kp.getKey("DOWN"):
+        Drone.land()
+
+    if kp.getKey("j"):
+        key_pressed = 1
+        lr = -speed
+    elif kp.getKey("l"):
+        key_pressed = 1
+        lr = speed
+
+    if kp.getKey("i"):
+        key_pressed = 1
+        fb = speed
+    elif kp.getKey("k"):
+        key_pressed = 1
+        fb = -speed
+
+    if kp.getKey("w"):
+        key_pressed = 1
+        ud = speed
+    elif kp.getKey("s"):
+        key_pressed = 1
+        ud = -speed
+
+    if kp.getKey("a"):
+        key_pressed = 1
+        yv = -speed
+    elif kp.getKey("d"):
+        key_pressed = 1
+        yv = speed
+    InfoText = "battery : {0}% height: {1}cm   time: {2}".format(drone.get_battery(), drone.get_height(), time.strftime("%H:%M:%S",time.localtime()))
+    cv2.putText(image, InfoText, (10, 20), font, fontScale, (0, 0, 255), lineThickness)
+    if key_pressed == 1:
+        InfoText = "Command : lr:{0}% fb:{1} ud:{2} yv:{3}".format(lr, fb, ud, yv)
+        cv2.putText(image, InfoText, (10, 40), font, fontScale, (0, 0, 255), lineThickness)
+
+    drone.send_rc_control(lr, fb, ud, yv)
+
+# 主程序
+# 摄像头设置
+Camera_Width = 720
+Camera_Height = 480
+DetectRange = [6000, 11000]  # DetectRange[0] 是保持静止的检测人脸面积阈值下限，DetectRange[0] 是保持静止的检测人脸面积阈值上限
+PID_Parameter = [0.5, 0.0004, 0.4]
+pErrorRotate, pErrorUp = 0, 0
+
+# 字体设置
+font = cv2.FONT_HERSHEY_SIMPLEX
+fontScale = 0.5
+fontColor = (255, 0, 0)
+lineThickness = 1
+
+# Tello初始化设置
+Drone = tello.Tello()  # 创建飞行器对象
+Drone.connect()  # 连接到飞行器
+Drone.streamon()  # 开启视频传输
+Drone.LOGGER.setLevel(logging.ERROR)  # 只显示错误信息
+sleep(5)  #  等待视频初始化
+kp.init()  # 初始化按键处理模块
+
+
+while True:
+    OriginalImage = Drone.get_frame_read().frame
+    Image = cv2.resize(OriginalImage, (Camera_Width, Camera_Height))
+    getKeyboardInput(drone=Drone, speed=70, image=Image)  # 按键控制
+    cv2.imshow("Drone Control Centre", Image)
+    cv2.waitKey(1)

四则运算计算器.py

@@ -0,0 +1,160 @@
+
+# 四则运算行棋      计算器
+"""|||mid_to_aft：将中缀表达式转化为后缀表达式l;
+aft_to_cal：有参数l，将后缀表达式进行计算；
+mid_to_cal：直接将中缀表达式进行计算。|||"""
+
+
+class Calculator(object):  # 用一个类应用于计算
+    def __init__(self, equ):
+        self.s = equ
+
+    def mid_to_aft(self):
+        pref = {'+': 1, '-': 1, '*': 2, '/': 2, '^': 3}  # 符号字典
+        l = ''
+        A = []
+        i = 0
+        while True:
+            loc = self.s[i]
+            # 可能是一个两位以上的数字
+            if loc in list('0123456789'):
+                while i < len(self.s) - 1 and self.s[i + 1] in list('0123456789'):  # 不是最后一个数字且为连续数字
+                    loc += self.s[i + 1]
+                    i += 1  # 刚好到连续的最后一个数字
+                l = l + loc + ' '
+            elif loc in list('()+-*/^'):
+                if A == [] or loc == '(':
+                    A.append(loc)
+                elif loc == ')':
+                    while A[-1] != '(':
+                        l = l + A.pop() + ' '
+                    A.pop()
+                elif A[-1] == '(':
+                    A.append(loc)
+                else:
+                    if pref[loc] > pref[A[-1]]:
+                        A.append(loc)
+                    else:
+                        while A[-1] != '(':
+                            l = l + A.pop() + ' '
+                            if A == []:
+                                break
+                        A.append(loc)
+            i += 1
+            if i == len(self.s):
+                while A != []:
+                    if len(A) == 1:
+                        l += A.pop()
+                    else:
+                        l = l + A.pop() + ' '
+                break
+        return l
+
+    def aft_to_cal(self, l):
+        A = []
+        i = 0
+        while True:
+            # print('第{}个元素：A = '.format(i+1),A)
+            loc = l[i]
+            if loc in list('0123456789'):
+                while l[i + 1] in list('0123456789'):  # 此时肯定是数字
+                    loc += l[i + 1]
+                    i = i + 1
+                A.append(float(loc))
+                i += 1
+            elif loc == ' ':
+                i += 1
+                continue
+            else:
+                if loc == '+':
+                    A.append(A.pop() + A.pop())
+                elif loc == '-':
+                    A.append(-A.pop() + A.pop())
+                elif loc == '*':
+                    A.append(A.pop() * A.pop())
+                elif loc == '/':
+                    A.append((1 / A.pop()) * A.pop())
+                else:
+                    last = A.pop()
+                    A.append(pow(A.pop(), last))
+                i += 1
+            if i >= len(l) - 1:
+                break
+        result = A.pop()
+        return result
+
+    def mid_to_cal(self):
+        pref = {'+': 1, '-': 1, '*': 2, '/': 2, '^': 3}
+        l = ''
+        A = []
+        i = 0
+        while True:
+            loc = self.s[i]
+            # 可能是一个两位以上的数字
+            if loc in list('0123456789'):
+                while i < len(self.s) - 1 and self.s[i + 1] in list('0123456789'):  # 不是最后一个数字且为连续数字
+                    loc += self.s[i + 1]
+                    i += 1  # 刚好到连续的最后一个数字
+                l = l + loc + ' '
+            elif loc in list('()+-*/^'):
+                if A == [] or loc == '(':
+                    A.append(loc)
+                elif loc == ')':
+                    while A[-1] != '(':
+                        l = l + A.pop() + ' '
+                    A.pop()
+                elif A[-1] == '(':
+                    A.append(loc)
+                else:
+                    if pref[loc] > pref[A[-1]]:
+                        A.append(loc)
+                    else:
+                        while A[-1] != '(':
+                            l = l + A.pop() + ' '
+                            if A == []:
+                                break
+                        A.append(loc)
+            i += 1
+            if i == len(self.s):
+                while A != []:
+                    if len(A) == 1:
+                        l += A.pop()
+                    else:
+                        l = l + A.pop() + ' '
+                break
+        i = 0
+        while True:
+            loc = l[i]
+            if loc in list('0123456789'):
+                while l[i + 1] in list('0123456789'):  # 此时肯定是数字
+                    loc += l[i + 1]
+                    i = i + 1
+                A.append(float(loc))
+                i += 1
+            elif loc == ' ':
+                i += 1
+                continue
+            else:
+                if loc == '+':
+                    A.append(A.pop() + A.pop())
+                elif loc == '-':
+                    A.append(-A.pop() + A.pop())
+                elif loc == '*':
+                    A.append(A.pop() * A.pop())
+                elif loc == '/':
+                    A.append((1 / A.pop()) * A.pop())
+                else:
+                    last = A.pop()
+                    A.append(pow(A.pop(), last))
+                i += 1
+            if i >= len(l) - 1:
+                break
+        result = A.pop()
+        return result
+
+
+'''def eval(expression):
+    c = eval(expression)
+    return c'''
+
+'''中缀转后缀计算器设计结束'''