我在python编码中遇到了缩进问题，但是我找不到确切的问题来修复它。

Question

Unindent does not match any outer indentation level (<unknown>), line 47) pylint(syntax-error) [47,1]

代码：

def takeCommand():
    #It takes mircrophone input from the user and return string output

    r = sr.Recognition()
    with sr.mircrophone() as source:
        print("Listening...")
        r.pause_threshold = 1
        audio = r.listen(source)

    try:
        print("Recognizing...")
        query = r.recognize_google(audio, language= 'eng-ben')
        print(f"User said: {query}\n")

    except Exception as e:                  (the problem is in this line)
        #print(e)
         print("Pardon me? Would be able to repeat that for me?")
         return "None"
    return query

来创建一个虚拟助手。

Answer 1

请检查下面代码中注释部分下面的行。您可以将注释(#)下面的行移回1个空格吗？

except Exception as e: (the problem is in this line) #print(e) <-print("Pardon me? Would be able to repeat that for me?") <-return "None"

Answer 2

通过pylint运行您的代码(在注释掉"problem here“注释之后)，我得到了以下结果：

$ pylint doit2.py 
************* Module doit2
doit2.py:12:50: C0326: No space allowed after keyword argument assignment
        query = r.recognize_google(audio, language= 'eng-ben')
                                                  ^ (bad-whitespace)
doit2.py:16:17: C0303: Trailing whitespace (trailing-whitespace)
doit2.py:17:65: C0303: Trailing whitespace (trailing-whitespace)
doit2.py:17:0: W0311: Bad indentation. Found 9 spaces, expected 8 (bad-indentation)
doit2.py:18:0: W0311: Bad indentation. Found 9 spaces, expected 8 (bad-indentation)
doit2.py:1:0: C0111: Missing module docstring (missing-docstring)
doit2.py:1:0: C0103: Function name "takeCommand" doesn't conform to snake_case naming style (invalid-name)
doit2.py:1:0: C0111: Missing function docstring (missing-docstring)
doit2.py:4:4: C0103: Variable name "r" doesn't conform to snake_case naming style (invalid-name)
doit2.py:4:8: E0602: Undefined variable 'sr' (undefined-variable)
doit2.py:5:9: E0602: Undefined variable 'sr' (undefined-variable)
doit2.py:15:11: W0703: Catching too general exception Exception (broad-except)
doit2.py:15:4: C0103: Variable name "e" doesn't conform to snake_case naming style (invalid-name)
doit2.py:15:4: W0612: Unused variable 'e' (unused-variable)

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Your code has been rated at -5.71/10

我假设您的问题是关于由python linter生成的W0311: Bad indentation注释。也就是说，您需要在捕获异常块内的每个print和return语句前删除一个空格。

另一种可能是您复制并粘贴了python文件中的选项卡(可能位于catch行)，这些选项卡在您的帖子中变成了空格。在这种情况下，you should change any tabs in your python file to spaces as per PEP-8。

当我们这样做的时候，下面的修改版本以出色的成绩通过了lint-checker：

""" Takes a command """

def take_command(speech_rec):
    """
    It takes mircrophone input from the user and return string output
    """

    result = speech_rec.Recognition()
    with speech_rec.mircrophone() as source:
        print("Listening...")
        result.pause_threshold = 1
        audio = result.listen(source)

    try:
        print("Recognizing...")
        query = result.recognize_google(audio, language='eng-ben')
        print(f"User said: {query}\n")

    except (speech_rec.UnknownValueError, speech_rec.RequestError):
        #print(e)
        print("Pardon me? Would be able to repeat that for me?")
        return "None"
    return query

在这段代码中，我们(1)删除了文件末尾的尾随空格，(2)将9个空格改为8个空格，(3)为模块本身和函数添加了文档字符串，(4)将变量名称更改为更有意义的名称和snakecase名称，(5)根据被调用的库捕获了更多特定的异常。