python if-statement與IndentationError

Question

我已經寫了一個函數來獲取數據庫中的命令，現在我試圖寫一個具有更多指定細節的函數以輸入到數據庫中。但是當我添加一個elif statement時會出錯

之前：（成功）（ps：用戶首先要輸入命令的功能，如果用戶在設備按鈕中輸入“ switch”，他將從我的交換機表中獲取命令，否則將從路由器中獲取命令”）：

def readciscodevice(function, device):
        conn = sqlite3.connect('server.db')
        cur = conn.cursor()
        if device == "switch":
                cur.execute(
                        "SELECT DISTINCT command FROM switch WHERE   function =? or function='configure terminal' or function='enable'  ORDER BY key ASC",
                        (function,))
                read = cur.fetchall()
                return read
        elif device == "router":
                cur.execute(
                        "SELECT DISTINCT command FROM router WHERE   function =? or function='configure terminal' or function='enable'  ORDER BY key ASC",
                        (function,))
                read = cur.fetchall()
                return read;
a = input("function:")
b = input("device:")
for result in readciscodevice(a,b):
        print(result[0])

然后，我試圖創建一個名為“ showcommand”的表，因為show命令不需要按“ configure terminal”，因此我將再做一個if語句，但它似乎不起作用...

在添加if語句之后：

def readciscodevice(function, device):
        conn = sqlite3.connect('server.db')
        cur = conn.cursor()
        if device == "switch":
                cur.execute(
                        "SELECT DISTINCT command FROM switch WHERE   function =? or function='configure terminal' or function='enable'  ORDER BY key ASC",
                        (function,))
                read = cur.fetchall()
                return read
        elif device == "router":
                cur.execute(
                        "SELECT DISTINCT command FROM router WHERE   function =? or function='configure terminal' or function='enable'  ORDER BY key ASC",
                        (function,))
                read = cur.fetchall()
                return read;
        elif device == "showcommand":
                 cur.execute(
                        "SELECT DISTINCT command FROM showcommand WHERE   function =? or  function='enable'  ORDER BY key ASC",
                        (function,))
                read = cur.fetchall()
                return read;


a = input("function:")
b = input("device:")
for result in readciscodevice(a,b):
        print(result[0])

主要錯誤（這是我最后的elif語句[showcommand]）：

read = cur.fetchall()
IndentationError: unindent does not match any outer indentation level

並返回讀取；

Trailing semicolon in the statement less... (Ctrl+F1) 
This inspection detects trailing semicolons in statements.

我不知道這是怎么回事？ 在我看來，這沒有任何問題，但問題是真實的。 感謝您的幫助！

Answer 1

您只有一個空格縮進，不應縮進

    elif device == "showcommand":
            cur.execute(
                    "SELECT DISTINCT command FROM showcommand WHERE   function =? or  function='enable'  ORDER BY key ASC",
                    (function,))
            read = cur.fetchall()
            return read;

Answer 2

該塊中開始cur.execute的那行似乎比其他行縮進了一個空格。