Question

我已经搜索并阅读了很多有关此内容的帖子并阅读了解决方案。基本上我所看到的是它归结为缩进。我已经尝试了所有建议但我仍然收到有关“返回”的错误消息。在功能之外。 at＆＃39; 返回temp_c，temp_f ＆＃39;有任何想法吗？

# RasPi Temperature Sensor - Beginning Sensor Networks

#

# For this script, we explore connecting a digital temperature sensor

# to the Raspberry Pi and reading the data. We display the

# temperature

# in Celsius and Fahrenheit.

# Import Python modules (always list in alphabetical order)

import glob

import os

import time

# Issue the modprobe statements to initialize the GPIO and

# temperature sensor modules

os.system('modprobe w1-gpio')

os.system('modprobe w1-therm')

# Use glob to search the file system for directories that match the

# prefix.

# Save the path to the directory.

datadir = glob.glob('/sys/bus/w1/devices/28*')[0]

# Create the full path to the file

datafile = os.path.join(datadir, 'w1_slave')

# Procedure for reading the raw data from the file.

# Open the file and read all of the lines then close it.

def read_data():

    f = open(datafile, 'r')

    lines = f.readlines()

    f.close()

    return lines

# Read the temperature and return the values found.

def get_temp():

# Initialize the variables.

    temp_c = None

    temp_f = None

    lines = read_data()

# If the end of the first line ends with something other than

# 'YES'

# Try reading the file again until 'YES' is found.

while not lines[0].strip().endswith('YES'):

    time.sleep(0.25)

    lines = read_data()

# Search the second line for the data prefixed with 't='

    pos = lines[1].find('t=')

# A return code of -1 means it wasn't found.

if pos != -1:

# Get the raw data located after the 't=' until the end of the

    temp_string = lines[1][ pos+2:]

# Convert the scale for printing

    temp_c = float(temp_string) / 1000.00

# Convert to Farenheit

    temp_f = temp_c * 9.00 / 5.00 + 32.00


return temp_c, temp_f

# Main loop. Read data then sleep 1 second until cancelled with CTRL-
# C.

while True:

    temp_c, temp_f = get_temp()

    print("Temperature is {0} degrees Celsius, "

    "{1} degrees Fahrenheit.".format(temp_c, temp_f))
    time.sleep(1)

Answer 1

您需要在$response = new Response; $response->setMaxAge($searchResult->getValidUntil()->getTimestamp()) ->setSharedMaxAge($searchResult->getValidUntil()->getTimestamp()) ->setExpires($searchResult->getValidUntil()) ->headers->addCacheControlDirective('must-revalidate', true);之后缩进所有内容，最多lines = read_data()。

return temp_c, temp_f

Answer 2

def get_temp():

   temp_c = None

   temp_f = None

   lines = read_data()

   # If the end of the first line ends with something other than

   # 'YES'

   # Try reading the file again until 'YES' is found.

   while not lines[0].strip().endswith('YES'):

      time.sleep(0.25)

      lines = read_data()

      # Search the second line for the data prefixed with 't='

      pos = lines[1].find('t=')

      # A return code of -1 means it wasn't found.

      if pos != -1:

      # Get the raw data located after the 't=' until the end of the

      temp_string = lines[1][ pos+2:]

      # Convert the scale for printing

      temp_c = float(temp_string) / 1000.00

      # Convert to Farenheit

      temp_f = temp_c * 9.00 / 5.00 + 32.00


   return temp_c, temp_f

缩进，如果有帮助

Answer 3

这是您的代码的正确缩进版本。你还有一个标签和4个空格的混合，应该避免，因为它经常会导致问题。

app.get('/*', function(req, res, next){ 
  res.setHeader('Last-Modified', (new Date()).toUTCString());
  next(); 
});

Python：SyntaxError：＆＃39; return＆＃39;功能之外

3 个答案: