导入adafruit_dht脚本时出现问题

Question

我正在运行一个覆盆子pi4b，并使用温度/湿度传感器。我在pi上有两个用户帐户:一个是pi，另一个是威尔。

当我在用户"pi“下运行下面的代码时，它工作得很好，当我使用"will”运行它时，它会出现以下错误：

Traceback (most recent call last):
  File "/tmp/pycharm_project_911/hum_temp.py", line 10, in <module>
    import adafruit_dht
ModuleNotFoundError: No module named 'adafruit_dht'

我猜用户“将”无法以某种方式正确地访问库adafruit_dht。有人能说明一下如何解决这个问题吗？

代码：

# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT


# datetime object containing current date and time
import datetime
import time
import board
import RPi.GPIO as GPIO
import adafruit_dht

# Initial the dht device, with data pin connected to:
dhtDevice = adafruit_dht.DHT22(board.D9)

# you can pass DHT22 use_pulseio=False if you wouldn't like to use pulseio.
# This may be necessary on a Linux single board computer like the Raspberry Pi,
# but it will not work in CircuitPython.
# dhtDevice = adafruit_dht.DHT22(board.D18, use_pulseio=False)

while True:
    try:
        # Print the values to the serial port
        temperature_c = dhtDevice.temperature
        # datetime object containing current date and time
        now = datetime.datetime.now()
        #temperature_f = temperature_c * (9 / 5) + 32
        humidity = dhtDevice.humidity
        print(now.strftime("%Y-%m-%d %H:%M:%S"))
        print(
                (" Temp: {:.1f} C    Humidity: {}% ".format(
                temperature_c, humidity)
            )
        )

    except RuntimeError as error:
        # Errors happen fairly often, DHT's are hard to read, just keep going
        print(error.args[0])
        time.sleep(2.0)
        continue
    except Exception as error:
        dhtDevice.exit()
        raise error
    #except KeyboardInterrupt:
    # here you put any code you want to run before the program
    # exits when you press CTRL+C
    # print "\n", counter # print value of counter
    time.sleep(5.0)
    #finally:
    GPIO.cleanup() # this ensures a clean exit

如果我尝试以"will“的形式运行adafruit pip install，就会得到：

Collecting Adafruit_DHT
  Using cached Adafruit_DHT-1.4.0.tar.gz (15 kB)
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: Adafruit-DHT
  Building wheel for Adafruit-DHT (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-7ly2kmxi/adafruit-dht_34d224c3c67f4069a502b69fbcc56826/setup.py'"'"'; __file__='"'"'/tmp/pip-install-7ly2kmxi/adafruit-dht_34d224c3c67f4069a502b69fbcc56826/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-v6u5rkri
       cwd: /tmp/pip-install-7ly2kmxi/adafruit-dht_34d224c3c67f4069a502b69fbcc56826/
  Complete output (1 lines):
  Could not detect if running on the Raspberry Pi or Beaglebone Black.  If this failure is unexpected, you can run again with --force-pi or --force-bbb parameter to force using the Raspberry Pi or Beaglebone Black respectively.
  ----------------------------------------
  ERROR: Failed building wheel for Adafruit-DHT

Answer 1

不是一个完美的解决方案，但我有同样的问题，并能够通过使用以下命令sudo pip3 install Adafruit_DHT --install-option="--force-pi"使其工作