def val_test(self): # ONLY FOR TESTING! Also, fast reading sometimes crashes IIC while 1: time.sleep(0.05)什么意思

这段代码看起来也是 Python。它定义了一个名为 `val_test` 的函数，该函数的作用是测试某个对象的数值，并且只用于测试目的。它包含一个无限循环 `while 1`，在循环中通过 `time.sleep(0.05)` 让程序暂停 50 毫秒，以避免因读取速度过快而导致 IIC 通信崩溃。但是需要注意的是，这段代码只能用于测试，不应该在正式的代码中使用。

相关问题

帮我改进一这段代码import machine import time from machine import I2C from machine import Pin from machine import sleep class accel(): def __init__(self, i2c, addr=0x68): self.iic = i2c self.addr = addr self.iic.start() self.iic.writeto(self.addr, bytearray([107, 0])) self.iic.stop() def get_raw_values(self): self.iic.start() a = self.iic.readfrom_mem(self.addr, 0x3B, 14) self.iic.stop() return a def get_ints(self): b = self.get_raw_values() c = [] for i in b: c.append(i) return c def bytes_toint(self, firstbyte, secondbyte): if not firstbyte & 0x80: return firstbyte << 8 | secondbyte return - (((firstbyte ^ 255) << 8) | (secondbyte ^ 255) + 1) def get_values(self): raw_ints = self.get_raw_values() vals = {} vals["AcX"] = self.bytes_toint(raw_ints[0], raw_ints[1]) vals["AcY"] = self.bytes_toint(raw_ints[2], raw_ints[3]) vals["AcZ"] = self.bytes_toint(raw_ints[4], raw_ints[5]) vals["Tmp"] = self.bytes_toint(raw_ints[6], raw_ints[7]) / 340.00 + 36.53 vals["GyX"] = self.bytes_toint(raw_ints[8], raw_ints[9]) vals["GyY"] = self.bytes_toint(raw_ints[10], raw_ints[11]) vals["GyZ"] = self.bytes_toint(raw_ints[12], raw_ints[13]) return vals # returned in range of Int16 # -32768 to 32767 def val_test(self): # ONLY FOR TESTING! Also, fast reading sometimes crashes IIC from time import sleep while 1: print(self.get_values()) sleep(0.05) clk = Pin(("clk", 36), Pin.OUT_OD) sda = Pin(("sda", 37), Pin.OUT_OD) i2c = I2C(-1, clk, sda, freq=100000) #initializing the I2C method for ESP32 #i2c = I2C(scl=Pin(5), sda=Pin(4)) #initializing the I2C method for ESP8266 mpu= accel(i2c) while True: mpu.get_values() print(mpu.get_values()) time.sleep(2)

Here are some potential improvements to the code:

1. Add comments: The code would be easier to read and understand if comments were added to explain what each section of the code does.

2. Use descriptive variable names: Some variable names are not very descriptive and could be improved. For example, "a", "b", and "c" are not very informative variable names.

3. Use list comprehension: Instead of using a for loop to append values to a list, you can use list comprehension to make the code more concise and readable.

4. Avoid unnecessary imports: The code imports the "sleep" function twice, which is unnecessary.

Here is an updated version of the code with these improvements implemented:

import machine
import time

from machine import I2C
from machine import Pin

class Accelerometer:
    def __init__(self, i2c, addr=0x68):
        """
        Initializes the accelerometer with the given I2C object and address.
        """
        self.i2c = i2c
        self.addr = addr
        
        self.iic.start()
        self.iic.writeto(self.addr, bytearray([107, 0]))
        self.iic.stop()
        
    def get_raw_values(self):
        """
        Reads the raw values from the accelerometer and returns them as bytes.
        """
        self.iic.start()
        values = self.iic.readfrom_mem(self.addr, 0x3B, 14)
        self.iic.stop()
        
        return values
    
    def bytes_to_int(self, first_byte, second_byte):
        """
        Converts two bytes to a signed integer.
        """
        if not first_byte & 0x80:
            return first_byte << 8 | second_byte
        
        return -(((first_byte ^ 255) << 8) | (second_byte ^ 255) + 1)
    
    def get_values(self):
        """
        Reads the values from the accelerometer and returns them as a dictionary.
        """
        raw_values = self.get_raw_values()
        
        values = {
            "AcX": self.bytes_to_int(raw_values[0], raw_values[1]),
            "AcY": self.bytes_to_int(raw_values[2], raw_values[3]),
            "AcZ": self.bytes_to_int(raw_values[4], raw_values[5]),
            "Tmp": self.bytes_to_int(raw_values[6], raw_values[7]) / 340.00 + 36.53,
            "GyX": self.bytes_to_int(raw_values[8], raw_values[9]),
            "GyY": self.bytes_to_int(raw_values[10], raw_values[11]),
            "GyZ": self.bytes_to_int(raw_values[12], raw_values[13])
        }
        
        return values
    
    def test_values(self):
        """
        Prints the accelerometer values continuously for testing purposes.
        """
        while True:
            print(self.get_values())
            time.sleep(0.05)

clk = Pin(("clk", 36), Pin.OUT_OD)
sda = Pin(("sda", 37), Pin.OUT_OD)

i2c = I2C(-1, clk, sda, freq=100000)

accelerometer = Accelerometer(i2c)

while True:
    values = accelerometer.get_values()
    print(values)
    time.sleep(2)

def _get_reward(self): # 获取当前收益 current_val = self._get_val() return current_val - self.profit - self.total_reward def _get_val(self): # 获取当前资产总价值 return self.profit + self.data.at[self.current_step, 'Close']

这是一个基于当前股票价格和交易收益计算奖励的函数。具体来说：

- `_get_reward` 函数使用 `_get_val` 函数计算当前资产总价值，然后从中减去之前的交易收益 `self.profit` 和已经获得的总奖励 `self.total_reward`，得到当前步的奖励值。
- `_get_val` 函数计算当前资产总价值，即已有的交易收益加上当前股票价格。其中，`self.profit` 记录了之前所有交易的收益总和，而 `self.data.at[self.current_step, 'Close']` 则表示当前时刻的股票价格。

这两个函数可能是用于实现一个基于强化学习的股票交易策略的一部分。在该策略中，奖励值是根据当前资产总价值和已经获得的总奖励计算的，用于评估当前交易策略的效果。