从文本fi返回布尔值

Question

尝试编写多个脚本，这些脚本将访问一个文本文件，从所述文本文件检索其切换值，然后返回值为false并将其更改为true，反之亦然。你知道吗

值总是返回为false，不确定缺少什么，但下面是文本文件：

1
False
3
True
5
6
7
8
9

以下是源代码：

def append():
  with open('values', 'r') as file:
      # read a list of lines into data
      data = file.readlines()
  # now change the line
  re_value = value

  data[1] = re_value+"\n"
  # and write everything back
  with open('values', 'w') as file:
      file.writelines(data)
  print("value changed to "+re_value)

def read() -> bool:
  #opens the value file to find the value of the toggle
  f=open("values", "r")

  for x, line in enumerate(f):
      if x == 1:
          toggle = line
          print(toggle)
          return toggle
  f.close()


toggle = read()

if toggle:
    print("Light is on turn it off")
    #runs command to turn off the light
    #runs command to change value for light
    value = "False"
    append()
else:
    print("Light is off turn it on")
    #runs command to turn on the light
    #runs command to change value for light
    value = "True"
    append()

Answer 1

尝试以下切换：

putback=[]
with open('values', 'r') as file:
    for e in file.readlines():
        if e=='True' or e=='False':
            print(e)
            putback.append(not e)
        else:
            putback.append(e)
with open('values','w') as file1:
     file.write('\n'.join(putback))

Answer 2

您用来计算条件的布尔值似乎是一个字符串。你知道吗

在这种情况下，可以将其保留为字符串：

if value == "True":
    print "Condition is true!"

或者实现类似的功能：

def str2bool(v):
  return v.lower() in ("true",) # you can add to the tuple other values that you consider as true if useful

print str2bool(value)

Answer 3

发现我的错误，伙计们，谢谢你们的帮助，把if语句改为

if toggle=="True\n":
    print("Light is on turn it off")
    #runs command to turn off the light
    #runs command to change value for light
    value = "False"
    append()

它缺少新行标记，因为它是一个多行文本文档